I keep a roll of wax paper in the garage. I now have the habit of cutting a small square and sealing the cap.I notice all the plastic caps (spin on) split after a while and the bottles/containers are no longer sealed. i found it on a plastic bleach bottle and thought it was the contents fault, but now I find it with any product. Must be the plastic failing for some reason. Spin on caps used to be of metal back in the day, weren't they?
Thought one could not be done without the other...I treat my concrete differently Dennis
I use REZ SEAL, stuff lasts for centuries and probably less expensive.
Just don't inhale it, or at least a lot of it.
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Sorry for that my friend, you know you should never drink and detail!