Nice houses and area. If mounting a duck house to a tree the tree needs to be in 1' or more of standing or flowing water to prevent predators from getting up the tree and in the house. If on land tree or post it really needs a predator guard.
Ya so - Sawdust is NOT recommended. Canyoncreek - just go get a couple Cubic Feet of cedar shaving (Pet dept) at Wally-World - that is cheapest easiest and best for the duck box's. Bag of cedar shavings in the pic...
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