Yes — pet supplies, mileage between client homes, and related business costs are deductible for independent pet sitters and dog walkers, as long as they're tied to client care rather than your own pets. Items like leashes, waste bags, treats, and pet first-aid supplies bought specifically for use with clients' animals are ordinary business expenses. If you drive between client homes for visits or walks, that mileage is deductible using either the standard mileage rate or actu