Using these caulking caps is easy. First, take a cap and fit it onto your caulking glue gun. Make sure it's properly attached so there are no leaks. When you're ready to caulk, squeeze the trigger on the gun gently to start the flow of caulking material through the cap. As you work, move the gun steadily along the area you're caulking. Here are some things to keep in mind. Don't use too much force when attaching the cap as it could damage the gun or the cap. Also, if you're not using the gun right away, keep the cap on to prevent the caulking material from drying inside. For maintenance, after you're done caulking, remove the cap and clean it with a damp cloth. Let it dry completely before storing it. If the cap gets clogged, you can try using a thin wire to clear it out. Store the caps in a cool, dry place to keep them in good condition.