mccannfarms said:
If they are in a cool dry place in a sealed container I would feel better about it than if they were in a wal-mart sack that stays in the barn all year.
I personally wouldn't use them in setting up anything ET, or with hard to find or expensive semen.. but if they were stored well then I probably would use them for "normal" AI practices.
Just my $0.02
Ours stay in freezer, zip-loc bag.... I use all my CIDRs twice, and keep an extra stash of ones to use 3x... You know, on those "maybe" cows, and on that "last one" that I'd really like to do, but ran out.
I haven't seen a noticeable decline with the 3rd use.
just rinse with warm water, and a tiny touch of soap after each use.