We rotate first aid supplies alot, because...

"Wet" medical supplies dry out quickly. For example, "alcohol prep pads" (the sort that are stored in their own little foil package) will be dry in about two summers.

Adhesive bandaids won't stick as well.

Medicines go bad quickly.

As FJ said - tape adhesive oozes out.

JYD #123 The great one formerly known as Architect.

I am now a fictional British television police officer (currently a Detective Sgt) at Thames Valley Station. My governor is Detective Inspector Fred Thursday and it’s 1969.