Well if it's eastern redcedar, insecticide is unnecessary.
Also, I am not a fan of treating wood with harsh chemicals, a better way in my opinion would be to kill any bugs that my be present with heat. Heat the wood up to over 140 degrees (fahrenheit) and hold it there for at least 3 hours, no bugs will survive. That is a common practice for kiln drying lumber that might be infected with insects (like powder post beetles for example) and if you have very much wood to do, it's cheaper than insecticide and far more effective.
Good luck on your venture, whatever they may be! I'm always a big fan of not letting things go to waste, must be from the Swiss or something...
