I’m 65 years old female and I finally had enough I have a stray cat I feed on my porch and they ran him out, not even afraid of me at all. I attached the extruder to the “hole” they were coming in and out and the first night nothing but.. the 2nd night they were on my porch I yelled and they ran to go back under the house but couldn’t get back in???? They ran off into the night! It’s been a couple days and no sight of them all again! It worked perfectly just like they said! I’m thrilled to be rid of my unwanted guests!