My dogs and Cats have fleas badly can anyone tell me what is a GOOD working home remedy?

The frontline really should have taken care of the problem if you did everything according to directions including your house.You need to focus on the whole house now as the fleas live in carpets and couches and animal bedding.Get premise spray and do your whole house.Frontline may sell that as well but I am not sure.It should contain procor as that will work for up to 7 months and will stay even if you vacuum,which you must do everyday till the problem is gone.Multiple animals make flea infestation hard to handle but be dilligent and you will succeed.