I know this has been tried befor but I got it to work. I have a battery operated denture cleaner. Kinda like a sonic jewlery cleaner. I decided to try cleaning my atty with it. Instead of using just one cleaning tablet I dropped in two. Turned on the switch and let it run for about 15 minutes. Rinsed it off. An used clean water in cleaner for about another 10 minutes. Rinsed my atty again. Blew excess water out and Let it set and drain and dry over night. Checked it out this morning and it was absolutely shiny. Works like brand new. I think one tablet just wasn't enough but 2 works and also don't let it get to gunky. Don't use it over about 5 days at a time without cleaning. Worked great for me. Oh, I used polident tabs. Give it a try and let me know if it works for you.