Hey there! If you're planning to use Spirual, there are a few easy precautions you should take. Make sure to use it in a well-ventilated room with a window, but keep the window closed while using it.

Afterwards, you can open the window to let the room air out. Also, store the cones in a dry place to avoid any moisture. To get the best effect, light the cone and hold it in direct fire for about 10–15 seconds before moving it to the burner. And, while it's burning, make sure to keep a safe distance of 2–3 feet and avoid inhaling the smoke directly.