Went in and bought 3 disposables. Tried all three in the store and they worked. Walked right out the front door and went to hit one and it didn't work. Didn't go anywhere and never left the front of the store, right in front of the window. Walked right back inside and they told me because I walked out of the store there was nothing they could do about it. Wouldn't exchange it or anything. That's a BS way of during business!!!