A single RX-090 receiver is more than enough power for most dogs for most applications

If you have no interest in dog sports

RX-120 receivers are low to medium power receivers suitable for dogs 25 pounds and larger

Each receiver

this toy is excellent for stimulating prey and building drive in puppies and adult dogs alike

Successful Together - The Journey To Masterful Obedience Nose Work A single RX-090 receiver isPeter Scherk and Dr. Florian Knabl Step by step instructions for IGP obedience From puppy to trial prep Hardcover 4th Revised Edition Detailed pictures and graphics Opened books cannot be returned [split] Successful Together The Journey To Masterful Obedience 4th Revised Edition is written by Peter Scherk and Dr. Florian Knabl. Mr. Scherk and Dr, Knabl are highly respected trainers and handlers with a lifetime of experience between them. Cumulatively