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.
How to seal siding from bugs.
Caulk is cheap easy to apply and can go a long way towards keeping bugs out.
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.
Simply apply this inexpensive filler into the cracks to seal.
There are a few spots in siding where you can successfully introduce insecticides.
Add caulk around window frames as well as around any air intake or exhaust grilles.
Seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.
Use caulk to patch small cracks in foundations and siding or use it to seal joints where the siding meets the roof or foundation.
I d use dusts but the ready made hole is far to small.