Cue your internet of (dog) shit jokes, but I think this is smartphone-connected dog training collar is actually pretty useful.

It works like most other training collars, with options to invoke a high pitch tone, vibration, or varying levels of static shock (which is totally optional) to encourage good behavior in your furry friend. The key difference is that you control it from your smartphone, meaning you never have to hunt down the remote, and dog sitters can install the app and use it while you’re away as well. Today’s deal is $10 less than usual, and an all-time low.