Caulking is done to fill in gaps between two objects, such as a wall and a bathtub. It is difficult to judge how much caulk is needed in some spaces and sometimes too much caulk can be used. The excess caulk will seep out of the space, causing the caulking job to look unattractive. You can remove excess caulk whether the caulk is still wet or it has already dried.

...
You don't have to be a professional to learn how to use caulk.

Wet Caulk

Step 1

Fill a bucket with warm water.

Step 2

Wet the sponge in the bucket of water and remove it.

Step 3

Wipe the excess caulk with the sponge. Start at one end of where the excess caulk begins and work your way to the other end.

Step 4

Rinse the sponge in the water and continue to wipe the area where the excess caulk is until no more caulk remains.

Dried Caulk

Step 5

Scrape the dried excess caulk with a razor blade. Start at one edge and continue to scrape until all of the excess caulk is removed.

Step 6

Wet a sponge under a running faucet. You do not need to soak the sponge--just dampen it.

Step 7

Wipe the area where the excess caulk was, with the wet sponge, to ensure that you removed all of the residue.