CCleaner is fast at getting rid of junk files. Windows 10. After it cleans, I use Kerish Doctor to finish up, then do a fresh restart. Keeps my computer running fast. Used it for 20 years. Bought by Avast Antivirus. Now we have to pay, but the amount of $14.28 that shows on the screens changes once payment info has been entered. Suddenly, it wants to charge my credit card AT LEAST $24.95, over $10 more than the quoted price on the previous screens. No way to contact the company or get help. Please make them help with this. I am 73 on a fixed income.