No, but if your log moose is going to be left exposed to the outdoor elements, you can seal the wood with a oil stain or spar urethane etc. to help preserve it if it isn't already finished/sealed.

We have seen mixed results with sealing the bark -on log moose. Depending on weather, humidity etc.

Being made from Eastern White Cedar, it is expected to withstand the outdoor elements for 10+ years for the most part. If it is under cover, it will last indefinitely.

Our traditional cedar log moose are not treated with any added chemicals. They are chainsawed with a vegetable oil-base bar & chain oil for safer handling. The wood may still contain moisture and seasoning of the wood is to be expected.