May sound like a stupid question, but I have two indoor cats, both were feral but checked out by vets for over 3 years. One I brought to the vet last week because he was scooting on the rug and his anus was red. He got treated for tapeworm and seems fine but my other cat now does the same thing which I will bring to vet after Christmas holiday. Perhaps they could have had the tapeworm for a long long time, but they have been only indoors for 3 years and I don't have fleas in my apartment. I've noticed a couple of cockroaches which I use a natural spray for. Could they ingest cockroaches which would leave larvae in the intestine like fleas which could grow into a tapeworm???? I can't find any reference to this but it was just a thought. Once in a while I have them, lol.