Thank you guys very much! I will try that freezer thing (just put it in a ziploc and keep it there for how long? I'll just do a search on it).
I'll also check to see if my pharmacy will sell me Claritin otc (hmmm my dh has Clarinaise - is it the same thing?) I'm just glad its not happenng with all my yarn and just this sheddy wool/ alpaca one!