I understand your frustration.
We just put stuff we don't want wet (like sandwiches) in sealed TupperWare containers.
We also may put a plastic "bin" over the ice to keep stuff in it out of the water without sealing.
A "work around" that fixes it for us.
"Flirtin' with Disaster" BBQ Team (RETIRED)
FBA and KCBS Cook and Judge.
Former owner of a WSM, a Smokey Joe, a Charbroil Commercial gasser (junk), the legendary "StudeDera", a FEC100, a Fast Eddy PG500, and Sherman the Wonder Trailer.
Now cooking with a Yoder YS640
Proud Pellet guy cooking on real wood.