It doesn't necesarily have to be pineapple juice. Any citrus fruit will work just as well. If it can be used as a meat tenderizer, it breaks down organic matter. I usually use oranges. If the ferret likes orange, I'll just give a wedge once or twice a day. If not, a cc or 2 of juice once or twice a day should do the trick. It is important that it be fresh though, no bottled juice. I also use it in conjuction with laxatone. The orange helps break down the blockage, the laxatone moves it along. Keep in mind here the key word is organic. Citrus juice will do nothing if the blockage is synthetic material. (I also wouldn't give the juice to my insulinomic girl without discussing it with her vet first.) Tea` [Posted in FML issue 3143]