A couple times, my parents and I were away from home while someone down the street from us took care of our cats. I didn't know them too well, and I wasn't too sure about it since they had two cats who they pretty much let loose and paid no attention to them (eventually they ran away). But we had no other choice, so we chose them. They didn't clean the litterbox, and they overfed the cats so much that they were noticeably fatter when we got home.
I'd recommend that you (or anyone else) find a friend or neighbor who also has pets and that you know loves animals and will take good care of yours.