Instead i d probably just let the siding thoroughly dry in the sun checking for signs of bugs during that time then go ahead and use it.
How to seal siding from bugs.
I take advantage of these tiny holes using pyrethrin aerosols and an injection straw.
I d use dusts but the ready made hole is far to small.
Simply apply this inexpensive filler into the cracks to seal.
Use caulk to patch small cracks in foundations and siding or use it to seal joints where the siding meets the roof or foundation.
Paint works well over it.
Add caulk around window frames as well as around any air intake or exhaust grilles.
And unless you want to cover the wood with epoxy to completely seal everything in i don t think there s an impervious finish against insects.
Seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.