I'm having a problem with the commode that my 94 year old mom uses. Although I ALWAYS use a commode liner, and remove it EVERY DAY, there is always a remaining odor. Of course, the commode is near her bed, and the unpleasant smells bother her a lot! I've cleaned it REGULARLY with bleach and with other cleaning products, and I've even taken it outside to "air out" during the day, but the odors remain. Has anyone had this problem, and what was the solution? Thanks for any advice you can give!