How do I sanitize a dog bowl without harsh chemicals?

For daily washing, ordinary dish soap and water as hot as your hands can comfortably tolerate removes most residue and bacteria. The step people skip is a proper rinse afterward, since leftover soap film can attract more grime than it prevents.

Mix roughly one part white vinegar to four parts water, submerge the bowl for 10 to 15 minutes, then scrub with a brush dedicated to pet dishes and rinse thoroughly under running water until no vinegar smell remains. This loosens biofilm and mineral deposits without leaving a chemical residue behind.

A hot dishwasher cycle sanitizes stainless steel and most glazed ceramic bowls more thoroughly than hand washing can, since the water runs hotter than most people can comfortably use at the sink. Skip bleach or strong disinfectants near food bowls, since any residue left behind is unnecessary when soap, heat or vinegar already do the job.

Whichever method you use, an incomplete rinse afterward can leave a faint residue that either smells odd to a dog's sensitive nose or draws in more grime than it prevents. Rinse under running water for a good ten to fifteen seconds longer than feels necessary, and let the bowl air dry fully rather than wiping it with a cloth that may carry its own bacteria. Baking soda mixed into a paste with a little water is another mild option for scrubbing away stuck on residue without reaching for anything stronger, and it rinses away completely with plain water, leaving no lingering smell or film behind on the bowl's surface.