They aren't preserved, just dried out. The muscle has dried but will be subject to bugs and will deteriorate over a short span of time. It will also be subject to moisture and can accelerate the deterioration. By removing the meat and using a preservative, it will prolong the time span of the mount. @The Phantom is also a taxidermist, she might be interested in this conversation as well.Then how are mine preserved? They are not falling apart and are 100% dried out? The instructions are online, so I guess they are wrong? Dunno but it seemed to work for us.