Use flea shampoo or dawn dish soap.
I think the best solution if you really want to get rid of them completely is Frontline not the generic Frontline the good stuff from like a vet cuz you put it in from the back of their neck and just go down with it when are you going to gets in your system and when the fleas bite him for the blood it killed him instantly then the ones that are in your house if they jump back on the dogs are going to do the same thing by coming you're going to die
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