Two things...if you use distilled water...refill them with tap water and mark with date and source...second...has no one here ever lost a prescription?
An excellent point !
I have even had tap water go bad as it occasionally caught a bit of sunshine in the pantry due to seasonal change.
If you keep graph paper on the clipboard to record the date and the food product,
you will know exactly what you have on hand, and possible expiration date, or date it should be checked for freshness.