Does anyone know of an excellent fogger to kill fleas and a cream for the itch?

My moron ex-roommate brought a kitten in from the street without taking it to a vet. It was riddled with fleas; they cleaned it but they let it and their other cat go outside on a daily basis. After they left, over the last two weeks fleas (or possibly bed bugs) have been eating me a new one. Can someone who has dealt with this problem give me the name of the best fogger to kill these basterds and to help with the itching? Help!