This video explains how to caulk hard to reach areas with a drinking straw. The instructor begins by showing the needed tools for this project, which included duck tape and a drinking straw. The first step to prepare the drinking straw is to cut one end with four small cuts so it can be fit over the caulking tip and ducked taped securely. You must then insert the caulking gun with the straw adaptation into the hard to reach area and apply pressure slowly so the straw does not get damaged from excessive pressure. After the caulk has been apply to the hard to reach area, the project area can then be covered with the final coating of caulk.