we have used dawn for years now and its really the only thing we have found that worked.we have made the light s and pie pan flea and dawn in it at night, they work too. watch how much vinagar you give the dog because we had one that stop drinking and then we had to get himto drs. so they could get fluids in him. just be careful of the vinagar. sticker tape works too. mothballs and cedar chips in bedding helps too.