I had been killing silverfish and the odd spider over the past few months on my hardwood floor in the living room. I have no idea where they were coming from, so I purchased 2 of the Ultimate ATs 2 weeks ago. Well after having the units in place for 1 week I noticed the 1st silverfish today (not a single spider). It was in the same area as the others but not crawling on the floor like normal. It was writhing on the floor as if in agony. I was so impressed with the Ultimate AT product that I have ordered 2 more units. My girlfriend wants them to keep the spiders out. Thank you for a wonderful, safe, clean product that works.
I was so impressed