Yes, it’s safe to wash pet dishes with your human dishes. The CDC explicitly states that it’s okay to put pet items in the dishwasher with your dishes, and that you can wash pet bowls by hand in the kitchen sink. The key is proper cleaning technique, not keeping everything separate.
What the CDC Actually Says
The CDC’s guidance on this is straightforward: dishwasher-safe pet bowls can go right in with your regular load. For hand washing, you can use the kitchen sink for pet bowls, but you should thoroughly clean and disinfect the sink and surrounding area immediately afterward. This is the same common-sense hygiene you’d follow after handling raw chicken in the sink.
The FDA adds that pet food bowls should be washed with soap and hot water after each use, not just when they look dirty. Bacteria begin multiplying on leftover food residue quickly, and simply topping off a water bowl or adding fresh kibble on top of old residue creates the kind of moist environment where bacteria thrive. Re-wetting leftover pet food left in a bowl has been specifically flagged as encouraging bacterial growth.
Why Dishwashers Work Well for This
A standard dishwasher cycle does an effective job eliminating the bacteria most likely to be found on pet bowls. Research on dishwasher hygiene shows that common kitchen-relevant bacteria like E. coli and Salmonella are killed at temperatures as low as 45°C (113°F), which is well below what most dishwashers reach during a normal cycle. If your dishwasher has a sanitize setting, it runs even hotter, but a regular cycle with detergent handles the job for typical pet bowl contamination.
The combination of hot water, detergent, and mechanical spraying is what makes dishwashers more reliable than hand washing for killing bacteria. If you’re hand washing pet bowls, use hot soapy water and scrub thoroughly, then follow up by cleaning the sink itself.
The Real Risk Factor: What Your Pet Eats
The biggest variable in how carefully you need to handle pet dishes isn’t whether they touch your plates. It’s what food goes into them. A study of 96 dog food bowls found no Salmonella, Campylobacter, or dangerous strains of E. coli on any of them. These were bowls used for standard commercial pet food.
Raw pet food is a completely different story. An FDA study of 196 raw pet food samples found that 15 tested positive for Salmonella and 32 tested positive for Listeria. By comparison, only 1 out of 120 dry cat food samples tested positive for Salmonella. Raw meat-based diets have also been found to carry E. coli O157:H7 in about 23% of samples and Listeria in 43% of samples tested in one study. If you feed your pet a raw diet, you’re dealing with the same cross-contamination risks as handling raw meat for your own cooking, and pet bowl hygiene becomes much more important.
For households that feed raw pet food, wash those bowls separately with the same care you’d give a cutting board that held raw chicken. Hot soapy water, thorough scrubbing, and immediate sink disinfection afterward. Running them through a full dishwasher cycle with your other dishes is still fine, since the heat and detergent handle the pathogens, but don’t let raw-food-contaminated bowls sit in the sink where they could touch clean dishes or sponges before the wash cycle.
Bowl Material Matters for Cleanliness
Stainless steel and ceramic bowls are easier to fully sanitize than plastic ones. Plastic bowls develop tiny scratches over time that harbor bacteria even after washing. These micro-abrasions create surfaces where biofilm (a thin layer of bacteria) can build up and resist normal cleaning. If you’re using plastic pet bowls, replace them when they start looking scratched or worn, or switch to stainless steel, which stays smooth and cleans more reliably over the long term.
Households With Young Children or Immune-Compromised Members
Salmonella from pet food and bowls is a real concern for vulnerable people. It spreads through touching contaminated surfaces, not just through eating contaminated food. If someone in your home has a weakened immune system, is elderly, is pregnant, or is under five years old, tighter hygiene around pet dishes makes sense. That means washing bowls promptly after feeding rather than leaving them out, keeping pet feeding areas away from where you prepare human food, and washing your hands after handling pet bowls or food.
The dishwasher remains a perfectly safe option for these households. The temperatures and detergents used in a standard cycle are sufficient to kill the bacteria of concern. The higher risk comes from the casual moments: letting a toddler grab a pet bowl off the floor, leaving a dirty pet dish soaking next to clean dishes in the sink, or handling pet food and then touching other kitchen surfaces without washing your hands first.
Practical Tips That Actually Matter
- Wash after every meal. The FDA recommends cleaning pet food bowls after each use, not just once a day or when they look dirty.
- Water bowls need washing too. They develop a slimy biofilm that isn’t always visible. Wash them daily with soap and water.
- Dishwasher is your best option. It’s more consistent than hand washing and the CDC says mixing pet and human dishes in the same load is fine.
- Clean the sink after hand washing pet bowls. Soap and a disinfectant wipe or spray on the basin and surrounding countertop is sufficient.
- Don’t forget the scoop. Whatever you use to measure out pet food should be washed with the same frequency as the bowl itself.
- Choose stainless steel. It resists scratching and bacterial buildup better than plastic.