As doctors warn it can cause a dangerous reaction with a host of common drugs... 1  Researchers warn that grapefruit reacts with many medicines. 2  The fruit can cause devastating side-effects from stomach bleeding to kidney problems. 3  Doctors say the public is ignorant to the dangers and putting themselves needlessly at risk.
According to the definition of the question (based on light reflection and not light emission), a well-polished mirror is the the whitest substance on earth. The main reflection layer is usually made out of silver.
1 Diatomaceous earth is a fine powder that kills ants by pulling all the moisture from their bodies. 2  It works by absorbing moisture from the ant itself, but it's best used in dry environments. 3  You also don't want anyone in the house (especially pets and children) sniffing it up. 4  Try using salt. You also don't want anyone in the house (especially pets and children) sniffing it up. 2  Try using salt. 3  It has a similar drying-out effect on ants, especially if they carry it back to their nests. 4  You can spread it under doors, near windows, and along the edges of your walls.