Febreeze !!! I wet paper towels and shut the case -- then after a few days opened it and put it out in the sun. and kept on alternating the treatmants. Funally -- after a few months I put one of those air fresheners in a oval case partway opened and shut the case. Those cases are wood and the mildew smell has permeated. It takes a long time to get it out of the wood.
Keep Bitsy out of the case !!!