If you want to add wood chips to a propane smoker, there are numerous methods to add wood chips. You can apply any method. Our method is to add wood chips every five to six hours for a propane smoker. This is no hard and fast rule. But ensure this is the best way to add the wood chip to a propane smoker. It totally depends on the quality of the best propane smoker also. The process of adding wood chips every 5 to 6 six is called thinner smoke.