Have lived in this house now for 1.9 yrs. We had it inspected prior to purchasing it. Inspector made a comment that there were a few dead scorpions in the house but as soon as we moved it, they would leave. The house had been empty for about a year. We have been struggling with scorpions since that time. We have used several commercial insecticides, have had a prior exterminator examine the house, replaces weatherstripping and still see scorpions. Contacted DYOPC and they made some recommendations to how we were spraying. Purchased this product, sprayed it on 14 July and last night, (2 weeks later), saw one very alive scorpion scampering across the bathroom floor. Not sure this product is any better than any other.