2. Check the moisture content: Kiln-dried firewood must have a moisture content of less than twentyper cent. This means that that the wood burns up cleanly and efficiently, with just minimal smoke or creosote accumulation. Prior To purchasing any firewood, make sure to check its moisture quite happy with the moisture meter.Traditional air-drying methods accept months to prepare firewood of use. During this period, the timber can become mouldy and might harbour unwanted insects, causing potential health hazards. Alternatively, kiln drying hastens the burning process even though eliminating any bugs, fungi or moulds. The result is a premium quality product that looks clean, safe as well as highly effective when burned.