Negative Positive
Title: Bad design, no effect
Review: The battery compartment on this unit is poorly designed. You can't quite get the battery in right and the door closed all the way. The battery slot is too small and the leads to the 8V connector too short. I tried this thing on 3 different dogs at various ranges. There was no effect at all. I'd rather use an old fashion dog whistle where I can tell it's working.
Is the review positive or negative? 