Each compartment will hold 10ea 325mg aspirin.
The lids wear out after about 1 year.
They will go through the top shelf dishwasher.
If you are in a high humidity area, store tray in a sealed baggy with absorbent, since the lids are not air tight.
You can carry a couple of days on your body, in a small baggy when you travel in case your luggage gets delayed.