Ive had my stp packer for a few years now and had never had a problem with it, that was, untill about a month ago. I was out drinking with friends, and using the urinals, I tend to be best when drunk for some reason! But I decided to use the stall, and pulled my trousers all the way down in drunknes. I stood up when finished, and then realized when I looked back, that my stp packer was on the floor! Its the Mango one from Mango products (which Id recommend!!) so it does look like a prosthetic, not just a piece of plastic, so luckily I grabbed it and put it back in its rightful place before the next toilet occupant!