Over time, copper oxidizes to a blue-green color ... which makes your toilet bowl the perfect breeding ground. To treat them, you can use several cleaning staples, such as bleach and vinegar.

The toilet bowl has a blue and white floral design. It came from Tittenhurst Park where Lennon lived with Yoko Ono from 1969 to 1971, and where Lennon composed Imagine. Yoko Ono and John Lennon ...