I will mess maybe once a month simply because of the reasons previously described, clean up and smell. I've had one situation where using the diaper was absolutely necessary. I've never, ever needed diapers for daytime or bowl use, not even close. However, this one time I was driving home and the bowl urge hit me so fast and so hard, I knew I wouldn't make it to my bathroom at home which was only minutes away. I pulled over very quickly and, grabbed a diaper from the trunk. Before it was even taped on completely I was already messing it. Just a huge burst that quickly filled from front to back, I literally felt the diaper inflate at an amazing rate. I sat in the drivers seat of my car for a minute afterwards and had a huge sigh of relief that I had diapers on me, otherwise - I knew it was going to happen in my pants. It was an unbelievable experience for me, I've never had anything even remotely close to that.