This is a powerful tool that restores the integrity of the tattoo by loosening and removing "ground in" debris from the shoulder tattooer. An effective and sensible tool to manage your Livestock ID program. Use a simple process to cleanâ€¦mix half of container with warm water, approx. 3 gallons (12 litres). Let shoulder tattooer and characters sit overnight. Remove tatooer and characters from water mixture. Gently rinse. 1 L container. Not for washing hands.