Instruct: Classify Amazon reviews into positive or negative sentiment
Query: doesn't work at all

I just got back from calling Havahart regarding my 5250 electronic deer repellent. I ordered them and sat on them for a while. I finally got them put up about a month ago. One day 10 deer were milling around my garden. I thought, great now I can see if this works! One deer went up to smell it and nothing happened. The deer are still in my yard. I went out to finally put my finger on one and nothing happened. When I called to complain, they said put a rubber handled screw driver on it to check. I got one small spark from one of them. I can't seem to find my receipt, so they won't do anything about it and have no record of my buying it. What a waste! You could also go broke fitting them with 12 AA batteries. I will continue to search for my receipt. Rats!