On Dec 19, 10:42 am, Jim wrote:
Bought several heavy plastic bag containers of ice melt earlier this
year. Now although unopened they still managed to absorb moisture as
much of the contents are now chunks.

Any effective method of avoiding this? For now I'm transferring the
contents into plastic 5 gallon buckets which previously held laundry
detergent. Lids snap on pretty tight.

Just bust it up with a hammer or shovel