So my sweet little pup has a super power— much like my children she just turns off her ears when she isn’t interested in listening. She has been having issues with jumping and nipping and nothing has been working (training and all the tips we’ve used for other pups in the past). Someone recommended we get a buzzer collar and give it a try. I have never used one before but honestly we were desperate because she is jumping on and biting our littles and we can’t let it continue. So grabbed this one off amazon and I must say I am thrilled!!! 24 hours and she is a different pup! She has only jumped a few times and hasn’t nipped since the first buzz. This set came with two rubber collars (very long to fit any dog and we just cut the ends off), two receivers, and a remote that talks to both and can do three if you bought another. It makes sounds, vibrates, and shocks so you can start out with the sound and perk up if it doesn’t work. Range is 0-99 on the buzz and shock. Our pup ignored all but the shock and we have it set around 50. We did test it on ourselves first and it is weird but not painful. Just makes you jump a bit. Overall I am completely thrilled with this and is going to make a huge difference in our world and our pups behavior.