Ya I actually had some very old carto's that I have used for a month at a time, and boiled them last week before coming out to the Rockies. Been using the old carto's on my ego and my knight rider and they are producing some good vapor production and the flavor is still great. Sorry to tell you all, Danesnpits is less one great dane. My old 9 year old great dane Justice, passed away on New Years out here in the Rockies while I am visiting my family. She died of gastric torsion. It all happened so fast, and I am devastated beyond humanely possible.danes right a good boil and then let them dry good and i bet your old cartos will be almost as good as new , i like to boild em , then blow out the extra water and then i put em on a cookie sheet at a low temp in the oven , a bit of work but if your in need of a quick fix it may help
and when unsure always contact the seller as they can be pretty helpful