We know we could have clear coated it, but we weren't really going for the wood look. Wood was just the cheapest material we could find. Also, shellac, polyurethane, lacquer, etc. are expensive compared to a can of white spray paint.If you like the wood look you can seal the wood with a clear sealer poly,shellac. Shellac is actually made from the silk coocoons of a moth catipillar and is completley non toxic. It's what they use to coat m&m's and got baby cribs also a hard wood is less likely to mold I use a s American wood called purpleheart at work it is naturally bright purple and can be submerged underwater for decades without the slightest rot. If you know anybody that does woodworking we are always throwing away cuts the size you use as trash
Home Depot sells a 1gal can of shellac for $30.00, and small cans of poly or lacquer for about $10.00. Wal-mart sells white spray paint for about a dollar a can, and one can was more than enough for all these projects. Actually we didn't even have to buy it because we still had it left over from the first time we made enclosures this way, making this the 3rd batch of enclosures we've made with one can of paint.