Cleaning a Computer Mouse Ball That Keeps Sticking?

My computer's cordless mouse was not working right. I opened it and used a Q tip dipped in alcohol to clean the little roller bars and ball. The alcohol dries very fast. I put it back together and now it works like brand new. Of course, always check the battery too.

Source: My adult son told me about the rollers, I took it from there.

By EIW from Lancaster, PA