Fleas

Our dog has a flea problem. We have treated the backyard area with liquid flea killer. He has the medicine that you put behind his shoulders to kill the fleas when they bite. We have also put a flea collar on him. He gets baths regularly. We haven't seen fleas in the house, just on him.



I am thinking that even though the backyard was treated, the dogs in back of us and on the side of us must have fleas and he is picking them up from them.



Any suggestions on how to handle this problem.