The Bolt Pro is for use with essential oils. Dry herbs can damage the coil and we highly advise against using any type of dry herb in your Bolt Pro. A variety of substances, consistencies, and flavors of essential oils can be used on the Bolt Pro.
Remove unused liquids on the nail by heating the nail with no glass on it and tipping the Nail over a paper towel. This will help the longevity of the nail, as no oils will be building up inside over time with proper maintenance.