I took our kitten to the vet last weekend for a follow up. I mentioned that our kitty had a flea but he's too light to have the spot on treatment, so he used a spray and suggested that flea collars are a waste of money because they move the flea from the neck, not eradicate the problem itself. The vet also gave us some Indorex, which would treat all the flooring, vet saying it was highly likely that fleas were present in the flat if the cat had them 
