Sadly, we had a small flea issue but our one dog is highly sensitive to the bites, so she was going nuts. We have a cleaning lady come every week and spot clean between that, so that may have helped keep the problem down. We tried to treat with what the vet gave us but they must have been in the carpets. We eventually made the decision to rip up the carpeting and replace it with hardwood. Ehrlich came in in between the carpet ripped up and a floor guys and treating the sub floor. We washed all the linens and furniture, and had to treat all the cats too just in case. Its been almost 2 months and when we went it for a follow-up, she said she didn't find any fleas.
It looks like you have little dogs. Our vet recommended K9 Advantix II. Petco sells it for $47 for 4 months. Really that only works out to around $10 a month, which I think is awesome compared to the $8,000 it took us to replace everything.