One of our rooms developed a horrendous infestation seemingly overnight. I read about sprinkling salt on the carpet so I tried it.
It was so bad that when I walked into the room, my feet were covered! It was like one day nothing and the next day an army
Anyway, the instructions were to liberally cover the carpet with ordinary table salt, close off the room and leave it closed for 3 days. I went back in on the 4th day and no fleas. After reaching that point, the instructions were to vacuum the carpet a couple of times and toss the bag afterwards. It worked!!! I think the heavy dose of salt dehydrated them and the eggs too. Since I am certain that a lot of the salt remained in the carpet it must have continued to dehydrate the eggs.
I found a spray at Target which contained lavendar and other organic things. It was designed to hook up to the hose and spray outside. I did the whole foundation and that helped enormously.
I am going to get some diatomecious (sp) earth for inside my house for the damn roaches. One of the trials of living in the hot South - the Jurassic level roaches!!! Thanks for that great tip!!! The damn things come down our chimney.