AdwCleaner is a free program that can remove adware such as Yula, Cheap4all, Salesprizes, etc.   Currently it runs on PC’s with Windows versions 7 to 10.

Symptoms of adware include:

• Pop-up advertising
• Hijacking of web browser home pages
• Inability to navigate to well-known search sites such as Google.com, but redirects to unknown sites instead
• Unknown programs in Task Manager

AdwCleaner can be downloaded from https://www.malwarebytes.com/adwcleaner/