A tighter seal and no mess!
If you’ve had no success sealing partially used tubes of caulk with tape or a nail, try this method used by Club member Corbin Sebestyn of Lockhart, Texas. He cuts off the entire tip from an empty tube of caulk and cleans out any caulk that’s left inside. Next, he fuses the pointed end of the cut tip by heating it with a match or lighter and then squeezing the softened tip with a pliers. When slipped over the tip of an open caulk tube, this modified tip provides a tight seal.