"I have a 1,000 square foot home and I purchased the Zodiac Advanced Indoor Insect Spray, the Zodiac Spot-On, and the Zodiac flea shampoo (thinking that treating the house and cat with the same brand will be the most beneficial - HA!). We bathed the cat, waited until he was dry, treated him with the Spot-On, and then moved EVERYTHING and sprayed everywhere and everything. We had to use 4 cans (the can says it treats 1,000 sq feet - I don't know how they measure square feet, but it sure isn't realistic) to treat the house. This was 2 weeks ago. Today, the problem is actually worse than it was when we started. We have been diligent about vacuuming, and even re-treated the carpets after a week, thinking that would help. Bottom line: THIS PRODUCT DOES NOT WORK. I now have to call an exterminator to take care of the problem, it's gotten so bad."