I see a lot of hunting shows about them, has anyone ever used one?

i've watch all 14 of their youtube videos , looks pretty good. no first hand experience

I called in a group of 7 does using the fawn in distress call with the extinguisher. Have stopped bucks but not actually called one in.

I got one last year but when I slide the button to the higher pitched doe and fawn calls it sticks. I have to blow into pretty hard to get it to make the sound. It doesn't sound natural when I try and use it. The buck call sounds alright though. Wish I would've got it into the field earlier so I could have returned it.

I have been using one for 3 years now... I love it. It works great in my area.

Learn how to make all those vocalizations with your mouth and throat. One less thing to carry and more natural sounding. Watch the hunting shows. Those grunts, bleats or whatever hunters are trying to sound like when they try to stop deer is what you DON'T want to sound like.