I'm doing the exact same thing today. My dogs have never had fleas, and we got a couch from my MIL a few weeks back that I think had fleas in it. We opted not to fog, and used Adams carpet powder as recommended by the vet. I gave the dogs a flea bath that contained aloe to give them immediate relief, the bath kills eggs, fleas, and ticks. We sprayed the crap out of the couch, but if that doesn't work, I'll set it on fire.