After several unsuccessful attempts to get the bathroom joints brighter again (joint White pens, etc.) I've tried the Fuginator. Conclusion: I'm thrilled! Using a detergent or a mild cleaning solution, the joint should be wetted. Then scrub with the catchy Fuginator and wipe damp, ready. The joint then again looks like the first day. I am very satisfied and can only advise to stay away from this joint white pins.
