clearing mould

There are several things you can do. I would use bleach. It is probably just as effective as the cleaner you mentioned, and much cheaper! Once the mold is gone, the best way to keep it gone is prevention - without cleaners. Do you have an exhaust fan in the bathroom? Make sure you turn it on when you shower. If you dont have an exhaust fan, try opening the window or leaving the door open with you shower. A good way to keep the mold off the shower curtain is to always leave it closed - even when you arent in there. You have to make sure you give the extra steam/condesation a place to go. Either during your shower or after. That should help keep the mold away. Good luck!