I use aspen bedding, aside from right after I change the bedding I dont have any problems with it. The only time mine sneeze for for maybe an hour after switching the bedding out. I had a closed colony for 5 yrs and last year made the mistake of bringing someone else rats into my colony for an order I couldnt fill. This other person rats were in my facility for a day and two weeks later mine started dropping like flies from myco. I lost a 1/3 within 10 days so I gassed the rest and started over. I got rid of all the old caging, sterilzed everything with bleach and freezing, we had about 2 weeks here it was below -10 degrees so I opened the building up and let everything freeze solid after bleaching it. Then I got all my rats and mice from the labs. First generation out of the labs suck. They have a hard time adjusting from sterile enviros to normal conditions but once you get down a generation or two there awesome. I get alot higher production from them. Id get rid of those and seek lab strains if you can. Meds for myco are a waste of time I tried, I had no luck at all. At best theyll send the bacteria into remission for a while only to pop out agian in time. anyway hope this helps Jason
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Jason & Danica

Have you ever been so close to tragedy Or been close to folks who have..Have you ever felt a pain so powerful so heavy you collapse..I've never had to knock on wood but I know someone who has..Which makes me wonder if I could if I ever had to knock on wood..And I'm glad I havnt yet because I'm sure it isnt good..Thats the Impression that I get. By The Mighty Mighty Bosstones.

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