i found using borax soap powders works great on fleas and seems to kill the eggs with just one use. just spread it on the carpert and let it set for over a half hour then use the vac on it. we didnt let teh ferrets out on it but did half the house at a time also washing all the ferret bedding. it killed all the live fleas and thier eggs also. borax for us oldies is the 40 mule soap the put on wagon train it now comes in a yellow box. and whats left over can be used to wash your dirty stuff too neal maxies manna [Posted in FML 5400]