I hate it when part of my job requires entering houses to work on communication services. I have had to vomit more times than I can count. The best is being told to take your shoes off at the door so you can get the privilage of walking across their animal piss soaked carpets, through their garbage ridden kitchens into their dog sh#t haven basements to fix a wire issue because the mice have made a giant nest in their closet where have pissed and sh#t all over the phone connections!!!!!!! Then they call in pissed off because they got charged for us fixing their inside wiring issue!!!!!!!!!!!!!!!
I feel your pain. In a previous job I have been to the bowels of Lincoln.
Tell them you are not allowed to take your shoes off per company policy. Tell them it's an OSHA issue or something. Just don't take your shoes off. People griped at me about mud on their carpets and I never caved. Shoes are a necessity, especially in some of these nasty cesspits people call homes.
I have walked on carpets crunchy from animal feces. I have had to brush cockroaches out of my way to work on appliances. I have had to drive as fast as possible to the nearest convenience store to use the hand sink. It's not pretty.
Hand sanitizer is your friend. Be sure to have some on the truck.