Near the ground a few rows tiles are more difficult to clean up, prone yellow encrustation kind of dirt, and even brushes are difficult to remove.

• 可以用一块纱布或旧丝袜做一个小口袋，将香皂头装入扎紧挂在马桶的水箱内。肥皂溶在水中，便可起到清洁马桶的作用。