Just slice and rub raw potato on the stains and rinse with water. Well, they are said to never cross a chalk line. So get your chalk out and draw line on the floor or wherever ants tend to march - see for yourself. When you get a splinter, reach for the scotch tape before resorting to tweezers or a needle. Simply put the scotch tape over the splinter, then pull it off.
Scotch tape removes most splinters painlessly and easily.
The citric acid and effervescent action clean vitreous china. Wait a few minutes, then run the hot water.