Any suggestions regards a cheap wood preservative/barn paint? The do gooders in Albany[NY] have apparently banned the copper naphtylate containing Cuprinol. I need to coat bare wood on a large leanto[16'x16'x10']. Someone suggested used motor oil. ....not sure about that. I'd prefer to spray the coating on with a hand sprayer,versus using a brush or roller. If I could get copper naphtylate directly,I'd just mix it with a deck sealer. Frankly I miss creosote-it worked and it was cheap. One avoids the toxins by wearing level C PPE[rainsuit,boots,gloves,respirator with organic vapor cartridges- same as when spraying pesticides]. Thanks.