There are very many products like this out there, CCleaner and Glary utilities are the only 2 I trust not to destroy my sweet running system. I generally make an incremental copy of my C drive before installing and using giveaways, and I have always had to restore my C drive ( 2 mins) when I’ve tried others. Glary, IMO, is professionally well coded and works very well indeed. Recommended. Thanks SOS & Glary. :)