I have tried on two occassions to breed my own mice, although very successful.. I could not take the smell. I bought 6 proffesional breeding cages, keep them extremely clean, not too crowded, proper food, bedding....... even a little vinegar or vanilla extract in their water. I have 90 corns and several other colubrids. It was not a matter of trying to breed enough mice to feed them all. It was an attempt to offer them a meal once in awhile that I knew the quality was superb. I have used other breeders in the past, but my last order was placed with Big Cheese Rodents. 3,000 of various sizes. The quality was excellent. And the best part is, I was able to throw out the clothes pins for my nose. REG