You might find some dead flea's on the floor, couch etc, it depends how badly he was infested. Hoover round your home.
I would give him a bath and comb him over with a flea comb, also in my experience if i pick my dog up like a baby on their pink bellies you will see either fleas running to find hair or flea mess attached to the hair, (little black bits).so check that out! i hate fleas, horrible little things
