fleas fleas and more flipping fleas!!!

I looked after 2 dogs for 8 hours 3 days ago and my house is now infested with bloody fleas! I sprayed everything and treated my dog as soon as they left but the damn things still survived so I've just spent 200 on more treatments and I'm bombing/spraying/fogging the house again and giving my dogs/cats flea baths! I hate the little bitters!!!