PACT does not require that dogs have some sort of flea and tick preventive. Please make sure you discuss this with the owner. Most dogs are on flea and tick control, and PACT will be changing our protocols to require flea and tick control measures. PACT does not require Indoor cats to be on a flea and tick preventative, but that can be discussed with the owner if you would prefer that they have some sort of preventative. PACT does not require the pets be on monthly heartworm medications All Flea and Tick preventatives are paid for by the owner.