Then you crouch (doesn't work with standing) with (s) and crawl across from pool to pool multiple times until the spattering and smears turn into coverings. To get it on your teeth and hands, you must strip naked and drop everything (or the venom will only covers your clothes) and throw venom on a wall until a line of venom pools are created. You may rub it on your teeth for biting, on your hands for scratching, or put it on a weapon.

There are three methods of using this against your enemies. This method of dwarven distillation concentrates the dilute venom in the water into a potent pool on land where you can either grab it with your hands or fill a water skin. In order to move it onto a land tile and purify it, you must move back and forth between the land and water tile until a pool of venom forms on the land tile because of the spatter spreading mechanic. Normally, you can fill containers with an infinite amount of venom from a pool, but since it's in water it becomes laced with water, which is useless.

Enter the water with it, and you will see a pool of venom form in the water tile. Take the venomous weapon, in my case it was a tower-cap blow dart with a helmet snake venom covering, and put it in your hand. You need a water tile, a weapon with venom already on it (usually from subterranean animal people), and an animal or companion.