Review on 🐶 Handheld Ultrasonic Dog Bark Deterrent - 16.4 Feet Range Anti Barking Control Device for Small, Medium, and Large Dogs - Safe Stop Barking Training Tool by Holly Haman

This product is so poorly made I couldn't even try it as the battery compartment is totally useless and doesn't even hold batteries! Even without batteries in the compartment, the door will not hold or will not latch securely. It opens without batteries and weight inside. Then inside the battery compartment was missing 2 metal contacts on one end so the batteries couldn't even be connected to turn on. In places in the battery compartment that actually had both metal connections on either end. The spring type little coils were so badly crushed inside that they didn't even hold the batteries, the batteries just hung there not touching anything! Cheap waste of my money and time.