Ok, this is a weird question, but I have to know. My grandma has two cats, one boy, one girl (not that it matters) Anyway, somehow they have gotten fleas. I bought some front line and put it on them and it seemed to work because the fleas are dropping off of the cats. Anyway, they have never been outside in their lives except to go to the vets and to go back to the house when we bought them, and even then they were contained in a crate. Somehow they got fleas but we don't know how. My grandmother does not live near any kind of woods. She lives on a city street so there is technically no way they could have came in from outside. I'm completely stumped...anybody have any ideas?
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