I've been locked in a PA-5000 for the better part of a year. No, not continuously, but 24/7 most of the time with a few breaks, cleanings, and special treats. It's definitely the most comfortable and sustainable device I've ever tried. The only problem is, the damn things keep breaking every few months (or weeks). I've gotten into this cycle of getting one free warrantee replacement each time, buying from keptforher.com, so it comes out to about $40 per device. So it's an affordable ongoing expense but it's kind of ridiculous. It always breaks upon removal, the lock gets sticky and if you give it a little too much force it splits. I guess urine deposits build up inside the lock no matter how much you try to wash and rinse it, and gum up its motion. Does anyone have any tips on how to avoid this? Would lubricating the lock work? With what? Is there any way to clean out the deposits without messing up the lock? Maybe soak it in something once in a while?