Caulk Savers are another solution to the old problem of how to store that half-empty tube of leftover caulk — instead of just capping the tube stem, the 3″-long by 1/8″-diameter Caulk Saver stem penetrates into the tube, and the threaded design ensures a clear passage once it’s removed. Although it’s named the Caulk Saver it’ll cap and plug adhesive, silicone, or any other product that comes in a caulk tube.
The Caulk Saver screws into the tube and keeps air out. Turning it clockwise draws the tapered part of the Caulk Saver into the tube, sealing it. Turning it counter-clockwise removes it, cutting any dried caulk in the process.
You’ll pay somewhere between $1 and $2 for a single reusable Caulk Saver.