Some caulk guns come with a spout cutter built in. If not, use a utility knife to cut the tip off the caulking tube at a 45-degree angle. For fatter lines, cut the nozzle closer to the tube.

But a caulk gun is quite simple to load and use. "Caulking guns have evolved over the years," says George Esposito, owner of Canal Kitchens in Staten Island, NY.

A traditional caulk gun greatly relies on the person's own strength to handle things properly. For a lot of people, this is fine for when you first start using the caulk gun, but once you're deep ...