While it isn’t technically a caulk remover, a lot of DIY enthusiasts have had success using Goo Gone in a pinch. [3] X Research source
You can always spot-test the product if you’re worried about damaging the surface surrounding the caulk. Apply a small bit of the product to an area nobody will see and wait to see if it damages or discolors anything.
For sprays, you typically just spritz the entire length of caulk. Gels and pastes are usually applied directly on top of the caulk. When the caulk is soft, you can just peel the caulk up by hand most of the time. If necessary, you can pry it up with pliers or a putty knife.
You may not want to go this route if the caulk is on any kind of malleable plastic, which may melt. Heat may also discolor painted surfaces. This should be totally safe with masonry, tile, or wood, though. It doesn’t take a lot of heat for this to work. If the caulk is in an area that’s exposed to the sun, removing the caulk near the end of a warm, sunny day should help this process along (or prevent the need for it entirely).
The amount of time that it will take for the caulk to soften up is going to vary depending on the type and age of the caulk. It shouldn’t take a ton of time for the caulk to soften up, though. Once it’s soft, you should be able to peel the caulk up by hand. You can use a putty knife or pliers if you need some extra leverage.
Mineral spirits will cause the caulk to swell a bit, which will weaken its adhesion. Wear gloves and keep a window open while you work with mineral spirits. It’s not super dangerous stuff, but it can irritate your skin and it smells pretty strong.
The alcohol will cause the caulk to expand, which will make it much easier to tear up. This may only work for water-based latex caulk. According to some folks, 100% pure silicone caulk will not soften up with alcohol. [14] X Research source
Vinegar and silicone caulk both contain acetic acid. Pouring vinegar on the caulk should increase the acetic acid levels and make it malleable again. You should be able to use lacquer thinner as well, but that may damage the surface underneath the caulk. Once the caulk is soft, you can usually pull it off by hand. You can use a putty knife or pliers if you need some help getting it up.