Why You Should Routinely Clean Your Pet’s Food and Water Bowls

Did you know your pet's food and water bowls are a hot spot of risk? Dirty food and water bowls can lead to parasites, affecting your pets and household. In the context of hygiene, pet food bowls are definitely an important part of your cleaning routine to be meticulous about.

We will cover a variety of things:

Good Hygiene & Safety Measures

4 Ways Your Dog’s Water Can Make Them Sick

Determining the right bowls for your pet

Where Do the Bugs Come From?

Zoonotic diseases are diseases that normally infect an animal, but poses a risk to people.

The most common zoonoses with regard to food and water bowls are salmonella, campylobacter, and worms.

These bugs have different mechanisms of causing infection, but they can all be shed into the environment through feces and travel indoors on the pet’s paws or coat.

When your pet licks their fur and then eats from a bowl, this can spread infection onto an object you touch. When you pick up the bowl, you run the risk of getting that same bug on your hands.

Also, with salmonella, the food itself may contain bacteria, with raw meat and eggs posing a special risk. We normally rely on thorough cooking to kill salmonella, so feeding a raw diet to your pet increases the risk.

Food Hygiene

Knowing raw meat could contain salmonella should make you think twice about where you store it.

It should be refrigerated (below 40° F) to slow down the growth of contaminating bacteria. Avoid storing raw meat or any pet food immediately beside human food. Make sure it’s securely wrapped and put in a different section of the fridge whenever possible.

The longer food sits in the open at room temperature, the greater the chance of bacterial contamination and multiplication. With this in mind, serve only the portion your pet can eat in one go so that food isn’t left sitting around. To streamline this and avoid the risks, buy packs of moist food in smaller sizes so you can throw unopened food away rather than store open sachets for days.

Related: Salmonella Infection in Pets & People and Zoonotic Diseases

What’s the Safest Way to Wash Bowls?

Wash them every day: Rinse them under running water and either hand-wash them in hot soapy water or put them on the top rack of the dishwasher (so the dishwasher’s heat doesn’t melt plastic dishes).

When hand-washing, do the pet’s dishes last, using a separate sponge or scourer kept just for the pet’s things. Make the water as hot as you can stand without burning yourself and use liquid or detergent soap. Rinse them well — your pets won’t enjoy a soapy aftertaste, and there’s a slim chance it could make them ill.

Fresh drinking water must be available for your pet at all times, so have at least 2 sets of everything so you have one bowl that’s clean and full of water for your pet while you are cleaning the other one.

Other Safety Measures

Always keep separate utensils for the pet’s food, such as serving spoons, forks, or scoops. Never use the pet’s things (toys, bowls, etc.) as a scoop.

Although some pets have nasty tummy upsets as a result of salmonella and campylobacter—not all do. Some pets are carriers, meaning the bug is in their system—they’re not ill, but they excrete it in their waste. Some of those bacteria (and also worm eggs) get onto the pet’s coat and then onto your hands when you stroke them. Delightful imagery, right? Wash! Your! Hands!

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4 Ways Your Dog’s Water Can Make Them Sick

Your dog’s water bowl is the 3rd most germ-laden place in the house!

We all know clean and fresh water is vital for good health. With this in mind, you probably top up the bowl every time it goes down.

But as it happens, this isn’t sufficient to ensure good health. Merely topping up the water level does nothing to control harmful bacteria or even toxins that can be lurking in the water. Not only are these bugs unpleasant, but also they can cause illness in people, especially those with weak immune systems. So what bugs could be lurking in your pet's water bowl? Surprisingly, quite a few!

1. Giardia

This single-celled parasite may be better known to you as “traveler’s diarrhea.” It can infect people too—not just your pets.

Giardia is shed in feces inside a hardy oocyst. The latter is tough and can survive for long periods of time in warm, humid conditions, and thrives in water.

When a dog drinks infected water, the parasite passes into its gut. Some dogs show no symptoms, but others can develop sickness and weight loss in addition to diarrhea.

A diagnosis is made by examining a fecal sample under a microscope. Most cases respond well to 3-10 days of medication tailored to your pet.

Related: How do pets and people become infected with Giardia?

2. Cryptosporidium

Cryptosporidium is similar to giardia but a whole lot tougher. It’s so tough that it can survive chlorine treatment. Similar to giardia, oocysts are passed in feces that, if they get into the water, are a source of infection for animals and birds.

• Your vet will prepare a treatment of fenbendazole or metronidazole to kill the parasite in the gut.

• Bathe and shampoo the dog on the last day of treatment to wash away any oocysts clinging to the coat. Not doing so risks reinfection should the dog lick their fur.

Related: What Can I Catch From My Dog?

3. Leptospirosis

Leptospirosis is a particularly nasty infection with the potential to kill. It’s also a devious infection because signs can range from mild stomach upsets that last for weeks to months to an acute liver and kidney failure that are fatal in hours.

Other symptoms include:

• Fever

• Muscle weakness

• Blood in the urine

• Loss of appetite

• Vomiting

• Diarrhea

• Collapse due to organ failure

Leptospirosis can be spread by rat urine and especially loves water sources such as standing water, puddles, and birdbaths. The unpredictable nature of leptospirosis means prevention is the best policy.

Luckily, there are vaccines available for your dog. If you live in a risk area for lepto, then your vet will advise giving the vaccine. A word of caution, though: The vaccine must be given yearly, as immunity is often gone completely 12 months after the previous dose.

Humans, however, don’t yet have a vaccine. Did you know pets can pass lepto to people? If your dog shows similar symptoms to those above and you feel unwell, see your physician as a matter of urgency.

Related: You and Your Pet Are at Risk For Leptospirosis

4. Blue-Green Algae

You may be aware that dogs shouldn’t swim in water with an obvious algal bloom—but do you know why?

Cyanobacteria, also known as blue-green algae, are a toxin-producing form of bacteria. This toxin can affect any mammal (yes, including people), causing nerve and liver damage.

Signs of toxicity include:

• Weakness

• Muscle tremors

• Drooling

• Vomiting

• Diarrhea

• Breathing difficulties

• Collapse and death

There is no antidote to blue-green algae poisoning. Treatment includes rinsing out the stomach to remove contamination and supportive care with intravenous fluids.

So don’t let your dog swim in dirty water or drink from containers of “old” water — give them the fresh stuff.

Related: How Red Tide Affects Your Pet

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Biofilms on Your Pet’s Water Bowl Are Bad

Spot the biofilm in your pet’s water bowl.

Does your dog or cat have a stainless steel drinking bowl? Next time you rinse the bowl under the tap, look for that misty, smoky layer covering the metal.

If you can’t see it, try wiping your finger across the wet metal surface. If your fingertip leaves a clean streak in its path, then you’re looking at a biofilm.

The definition of a biofilm is: “A thin but robust layer of mucilage adhering to a solid surface and containing a community of bacteria and other microorganisms.” So, basically a thin layer of stickiness rich in bacteria that coats a surface. Yum!
You will have experienced a biofilm for yourself the last time you skipped brushing your teeth. Do you know that unpleasant stickiness that coated your teeth? Well, this is a biofilm made up of mucin, which is a mucous-like glue and bacteria combination.

When water comes into contact with a biofilm, it then becomes a weak bacterial soup. When the pet drinks that water, it’s tantamount to challenging their immune system to a duel. If the dog is very young, elderly, or on immune-suppressive drugs, then there’s a risk of them becoming ill.

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Ditch The Plastic!

Plastic is riddled with risks.

Plastic bowls have more than their fair share of problems when it comes to drinking water.

The plastic surface is easily scratched, which provides inviting nooks and crannies for bugs to hide in.

But more than this, plastic bowls are made of chemicals. One in particular, p-benzyl hydroquinone, inhibits the production of melanin (dark pigment).

It’s melanin that gives a black, leathery nose its rich, deep color. When a nose has regular contact with p-benzyl hydroquinone, such as when the dog drinks, it can cause depigmentation. This can lead to a black nose turning mottled or patchy-looking.

Just think—if this substance can do this to the outside of the body, what’s it doing to the inside?

We know that BPA (a chemical that hardens plastic) can interfere with the production of natural hormones in the body. In people, BPAs are linked to diabetes, impaired brain function, and cancer. When you think about how small dogs and cats are compared to people, the dose of BPA they get must be relatively higher.

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Micro-Cracks Lurk in Ceramic Bowls

Surely, a good, heavy-duty ceramic bowl is better, right? Yes and no.

Ceramic bowls aren’t regulated in terms of what goes into making them. There is concern that some originating from China contain lead. Lead is a toxic substance that causes destruction of the red blood cells and nerve damage and is generally a substance best avoided.

In addition, the glaze on a ceramic bowl is subject to microfractures. This is called “crazing” within the glaze and can be seen on a microscopic level.

Scientists investigating biofilms found them to be just as bad on ceramic bowls as plastic. They suspect this ultra-fine crazing somehow provides “grip” for the microfilm to stick to.

Stainless Steel Is Best

The hands-down winner when it comes to drinking bowls is stainless steel. However, this is only if they are washed regularly, preferably on a daily basis.

Even a stainless steel bowl builds up a biofilm if it’s not washed properly. Get into the habit of washing your dog’s water bowl daily, preferably with hot, soapy water or by putting it through the dishwasher.

Don’t be tempted to merely top up the water level— this is feeding the bacterial soup. For optimal health for your pets (and family) choose stainless steel and empty it out daily, wash it with hot, soapy water, rinse and fill with fresh water.

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What is rabies? What do I do if my pet is infected?

What is rabies?

Rabies is a deadly disease caused by a virus that attacks the nervous system. The virus is secreted in saliva and is usually transmitted to people and animals by a bite from an infected animal. Less commonly, rabies can be transmitted when saliva from a rabid animal comes in contact with an open cut on the skin or the eyes, nose, or mouth of a person or animal. Once the outward signs of the disease appear, rabies is nearly always fatal.

What animals can get rabies?

Only mammals can get rabies; birds, fish, reptiles and amphibians do not. In the United States, most cases of rabies occur in wild animals—mainly skunks, raccoons, bats, coyotes, and foxes. In recent years, cats have become the most common domestic animal infected with rabies. This is because many cat owners do not vaccinate their cats and cats can be exposed to rabid wildlife, either outdoors or when bats get into the house. Rabies also occurs in dogs and cattle in significant numbers and, while not as common, has been diagnosed in horses, goats, sheep, swine and ferrets.

All mammals are susceptible to rabies.

Vaccination programs and control of stray animals have been effective in preventing rabies in most pets. Approved rabies vaccines are available for cats, dogs, ferrets, horses, cattle and sheep. Licensed oral vaccines are also being used for mass immunization of wildlife, particularly raccoons.

What are the signs of rabies in animals?

Once the rabies virus enters the body, it travels along the nerves to the brain. Animals with rabies may show a variety of signs, including fearfulness, aggression, excessive drooling, difficulty swallowing, staggering, paralysis and seizures. Aggressive behavior is common, but rabid animals may also be uncharacteristically affectionate. Horses and livestock with rabies also may exhibit depression, self-mutilation, or increased sensitivity to light. Rabid wild animals may lose their natural fear of humans, and display unusual behavior; for example, an animal that is usually only seen at night may be seen wandering in the daytime.

Although the most common signs of rabies are behavioral changes and unexplained paralysis, rabies should be considered in all cases of unexplained neurological disease. There is no treatment once the clinical signs of rabies appear.

Rabies infection of an animal can only be confirmed after death, through a microscopic examination of the animal’s brain.

How great is the risk of rabies to humans?

Rabies remains a major concern worldwide, killing around 59,000 people every year. Almost all of these deaths are due to rabies transmitted by dogs in countries where dog vaccination programs are not sufficiently developed to stop the spread of the virus.

Rabies vaccination and animal control programs, along with better treatment for people who have been bitten, have dramatically reduced the number of human cases of rabies in the United States. Most of the relatively few human cases in this country have resulted from exposures to bats; any contact with bats, even if a bite was not noticed, should be reported to your physician. Extremely rare cases have resulted from corneal or organ/tissue transplants from an infected donor. Dogs are still a significant source of rabies in other countries, particularly in Asia and Africa, so travelers should be aware of this risk and seek medical advice about vaccination prior to traveling outside of the United States.

What can I do to help control rabies?

Remember that rabies is entirely preventable through vaccination.

• Have your veterinarian vaccinate your dogs, cats, ferrets, and select horses and livestock. Your veterinarian will advise you on the recommended or required frequency of vaccination in your area.

• Reduce the possibility of exposure to rabies by not letting your pets roam free. Keep cats and ferrets indoors, and supervise dogs when they are outside. Spaying or neutering your pet may decrease roaming tendencies and will prevent them from contributing to the birth of unwanted animals.

• Don’t leave exposed garbage or pet food outside, as it may attract wild or stray animals.

• Wild animals should never be kept as pets. Not only may this be illegal, but wild animals pose a potential rabies threat to caretakers and to others.

• Observe all wild animals from a distance. A rabid wild animal may appear tame but don’t go near it. Teach children NEVER to handle unfamiliar animals—even if they appear friendly.

• If you see a wild animal acting strangely, report it to the city or county animal control department.

• Bat-proof your home and other structures to prevent bats from nesting and having access to people or pets.

What if my pet has bitten someone?

• Urge the victim to see a physician immediately and to follow the physician’s recommendations.

• Check with your veterinarian to determine if your pet’s vaccinations are up-to-date.

• Report the bite to the local health department and animal control authorities. Local regulations may require that your pet is confined and isolated for monitoring for signs of rabies.

• Immediately report any illness or unusual behavior by your pet to the local health department and to your veterinarian.

• Don’t let your pet stray and don’t give your pet away. The animal must be available for observation by public health authorities or a veterinarian.

• After the observation period, have your pet vaccinated for rabies if its vaccination is not current.

What if my pet has been bitten?

• Consult your veterinarian immediately and report the bite to local animal control authorities.

• Even if your dog, cat or ferret has a current vaccination, he/she should be revaccinated immediately, kept under the owner’s control, and observed for a period as specified by state law or local ordinance. Animals with expired vaccinations will need to be evaluated on a case-by-case basis.

• Dogs, cats and ferrets that have never been vaccinated and are exposed to a rabid animal may need to be euthanatized in accordance with regulations or placed in strict isolation for six months.

• Animals other than dogs, cats, and ferrets that are bitten by a rabid or potentially rabid animal may need to be euthanatized immediately.

What if I am bitten?

• Don’t panic, but don’t ignore the bite. Wash the wound thoroughly and vigorously with soap and lots of water for 15 minutes, then treat with a disinfectant such as ethanol or iodine.

• Call your physician immediately and explain how you were bitten. Follow the doctor’s advice. If necessary, your physician will give you the post exposure treatment recommended by the United States Public Health Service and may also treat you for other possible infections that could result from the bite.

• If possible, confine or capture the animal if it can be done safely. Once captured, don’t try to pick up the animal. Call the local animal control authorities to collect it. If the animal cannot be captured, try to memorize its appearance (size, color, etc.) and where it went after biting you.

• If it is a wild animal, only try to capture it if you can do so without getting bitten again. If the animal cannot be contained and must be killed to prevent its escape, do so without damaging the head. The brain will be needed to test for rabies.

• Report the bite to the local health department. Prompt and appropriate treatment after being bitten and before the disease develops can stop the infection and prevent the disease.

Pets and rabies vaccine bait

Bait containing rabies vaccine is commonly used for mass wildlife immunizations. The bait does not pose a health risk to you or your pets, but it is best to leave the bait undisturbed.​

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