Review on EverNary Dog Door Bell Wireless Doggie Doorbells For Potty Training With Warterproof Touch Button Dog Bells Included Receiver And Transmitters (1 Receiver + 4 Transmitters) by Brandon Patterson

I have had this doorbell for just under 2 months, and my dog has JUST figured out how to use it. She would hit the button on command, pretty much every time, but was just not understanding that she needed to hit it on her own. A few days back she suddenly hit the outside button on her own, we praised the crap out of her, and since then she has used it every time she wants to come in. I am glad we didn't give up on these, we just need to get her using the inside one to be let out.I knocked down one star because we originally had the receiver across the room from the door, and the outside button would only work 50% of the time, making training difficult. We moved the receiver to an outlet just inside the door and that made a world of difference. So you definitely need to have an outlet close to the transmitters.Also, there are I think way too many sound options.I just picked a simple chime sound. The others were a bit obnoxious. But I guess it's nice to have the options.