Every winter for about 3 years I had squirrels in the attic and in the walls and mice everywhere. I could set a mouse trap every 3 minutes and empty it over and over for hours. They were literally clawing through the walls and ceiling. It drove me insane for a while.
I tried everything, patching up holes, steel wool in holes, moth balls, high frequency rodent machines, traps, etc. etc. and the only thing that has worked is 'Rodent Strobe'. The day I put it in the attic and two in the crawl space, the clawing and scratching and running around stopped immediately and has never returned. Google 'rodent strobe'.
I'm interested in this method, but my biggest concern is if I drive any rodents out of the crawlspace, they'll just take up residence in another portion of the house (in walls, behind cabinets, etc.). Would you use the strobe in conjunction with some trapping/killing method?
I had them in my walls, they came into the kitchen, had one crawling up the curtains in my bedroom that fell down on me when I woke up, had them literally coming through the ceiling in my back bedroom, they had chewed holes in the wood floor and were coming into the back bedroom. I say 'they' because I wasn't ever sure exactly what they always were. I know that I had mice and squirrels, and I suspect possums, not sure about rats though.
I put one 'rodent strobe' up in the attic because it's a wide open space. The noises stopped up there immediately but I continued to hear noises in the crawl space and walls. I bought two for the crawl space. The day that I put it in the crawl space, I was sitting at my desk in a room next to the kitchen and I saw a mouse run from under the stove, stop dead in it's tracks and looked over at me for about 5 seconds, frozen, it seemed confused. It ran back under the stove and disappeared. It was kind of surreal. I haven't really heard any sounds since except on a rare occasion I'll hear something scramble around then disappear. I suspect that it's something that gets into the crawlspace and freaks out when it encounters the strobe.
It's not like a party strobe light. It sends out a single strobe about every other second. I believe I paid around $120 for the single one. It's well made and has a very long cord on it. Supposedly the bulb lasts continuously for up to 8 years. I've had mine about 3 years and it's still going strong. It was money well spent. I was so impressed with it that I wrote a testimonial on the website.
So to answer your question, if you put one in your attic and crawlspace, any rodents it drives into the house, will be temporary. In my case it seemed to drive them away. If they get in the walls, they have to come out at some point for food and water. I think they leave and don't come back. I can't imagine a worst case scenario than what was going on at my house. It was really bad.
