The Train ‘n Praise Potty Training System is an innovative system that uses a treat dispenser to encourage your pet to use pee-pads. The pee-pads are lined with sensors that send a signal to the treat dispenser once the pad has been used, rewarding your pet for their good behavior! How it works The Train ‘n Praise Potty System works using sensors that detect moisture on the pee pad. As your dog pees on the pad, a signal is sent to a transmitter that is clipped to the edge. The pee pad clip then wirelessly sends a signal to the treat dispenser to give kibble as a reward, creating a practical training solution. Product Features: 1. Uses positive reinforcement with treats to train your pet to use a pee pad and for basic obedience training 2. Indoor potty training solution for pet owners in apartments, condos, lofts or homes without private yards 3. Includes 6 highly absorbent leak-proof pads 4. Handheld remote activates the treat dispenser up to 25 feet away 5. Water-resistant pad control unit easily attaches and reattaches to new pee pads 6. Expandable - works with up to 10 additional sets of pee pads and clips to cover multiple areas (additional clips sold separately) 7. Treat dispenser can be used with or without an audible tone that lets your pet know a treat is coming 8. Treat dispenser can be used mounted to wall or free-standing 9. Works with dry kibble or treats up to 1/2 inch in size (slightly smaller than a dime) 10. For indoor use only