How do other sitters handle additional requests from dog owners who are having you sleep in their home while sitting? I have come across numerous occasions where dog owners are asking me to do additional duties apart from my dog sitting responsibility such as water plants, take out the trash, bring in the mail, etc. Usually, I do not mind doing those things; however I have a repeat owner who I am sitting for now who left me a five page typed letter stating all the "house sitting expectations" I did were wrong or incomplete the last time I sat their dogs. They asked me to help clean their airbnb in the basement, water all the plants (which I know nothing about plants and was not told during the meet and greet) and wash items related to the airbnb.

I feel like this is a bit much because I am being paid to take care of their dogs not their home, right? How would others sitters handle this?