Anyone else experiencing flea issues this year?

We have not, in the four years we've had our home, ever experienced flea issues. This year it seems we are having problems.

All three dogs are on Sentinel heart and flea control medication. The cats are not on anything, but are indoor cats.

We've sprayed the backyard twice, have bathed the dogs twice, the cats once each (joy, joy) and have powdered the carpet, and washed, with bleach - all of the dog bedding, plus human bedding where they also sleep.

It seems like it's just a long and lengthy fight. The one thing I DO NOT WANT to do is bomb the house. It scares the living heck out of me to do that.

Every time I think I've made progress, I find more fleas...pesky little buggers!

It's not a complete infestation yet, but if I can't get it under control, I'm afraid it might turn into that.

Any success stories people have had?