In May, we lost 5 lambs to coyotes in a span of a week. We have 110 ewes and have had coyote problems in the past but had not lost anything for 10 years after switching from guard dogs to a llama. When we experienced the coyote attacks again in May, I turned straight to your product I had seen in SHEEP! Magazine months prior. We are happy to report that we have not had ANY problems since we got the Nite Guards set up in our pasture, four on a post. My husband has seen fresh coyote tracks up to the edge of the pasture, but they haven’t gone any farther. Thank you for making such a great product! We can certainly rest easier knowing the lights are blinking.