I use a foodsaver for Ribeye,ground beef,veggies,fruit,ammo,rats,mice.
For years perfect health. The rats & mice are in the kitchen freezer.
You can put paper towels in the bag at the top and it blocks the rat blood from going in the drip tray. They usually don't have a lot of moisture or liquid.
You can also freeze them first, than do vacuum after there frozen.