I purchased 2 of the pet safe ultrasonic barkers to stop my dogs barking. 25 feet is the distance they are rated, so surely 2 in my kitchen area would work. Well they DIDN'T WORK AT ALLl, I returned them and the company charged me RESTOCKING and original shipping! For stuff that doesn't work! Don't buy from this company they sell products that first don't work and 2nd don't stand behind them and charge the purchaser. HORRIBLE:-(