Caulking on baseboards involves using a specialized sealant to fill gaps and prevent moisture penetration between the baseboards and the wall or floor. It requires understanding the different types of caulk materials and their applications, as well as proper surface preparation to ensure adhesion. By following step-by-step techniques and selecting the right tools (e.g., caulking gun, scraper), you can effectively seal gaps and enhance the aesthetics of your baseboards. Regular maintenance, such as cleaning and reapplication, helps prolong the effectiveness of the caulked areas.