Using your OX Professional Sausage Gun is easy. First, open the gun and insert your caulk or sealant. If it's a packaged one, use the attached puncture tool to open it. Then close the gun. Squeeze the handle and the high 24:1 thrust ratio will push out the material smoothly. When you're done, clean the gun with a damp cloth. If the plunger gets worn out, you can easily replace it as it's tool - less. Store the gun in a dry place. Don't use it with materials that are too thick for its capacity, as it might damage the gun. Also, keep it away from children when not in use.