Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Doesn't repel cats for long
Review: I bought this unit to keep a neighbor's cat from pooping in my kids' sandbox. It may have worked for a little while, but then the battery died after about two weeks (a single 9-volt doesn't seem to have the energy to power this for very long if there is much activity in you backyard), and the cat came back. I replaced the battery with a home-made 9-V replacement consisting of 6 1.5-V AA cells in a PVC pipe with a 9-V compatable connector, and now it seems to have lots of juice, but apparently the unit lost its scare factor when the original battery went bad and I have now found fresh poop in the sand about 2 feet in front of the fully functional unit. As a result, I cannot recommend this unit.
