Picture this . . .You've just contaminated your yellow stamp pad with blue ink after forgetting to clean off your stamp. That's one reason why it is a good idea to get into the habit of cleaning your stamps after each use, especially when changing colors.
The handiest method for cleaning stamps is with a bottle of stamp cleaner with a scrubber or roll-on applicator top. Apply the cleaner directly to the stamp, and then scrub it off onto a household sponge. Blot the stamp dry with a paper towel.
If you plan to do a lot of stamping, a Double Stamp Scrubber is the way to go. Use a spritz cleaner on one side of the scrubber. Leave the other size dry for blotting off your stamps after cleaning with the wet side.
Another method of cleaning stamps is to rub them over the surface of a damp sponge. A cellulose sponge works best because it does not break down or "lint up" your stamps. The sponge may be dampened with plain water, or a drop or two of dish soap can be added. Keep the sponge in a plastic container with a cover so it's ready at all times. Occasionally rinse the sponge out in water. This method of cleaning works well for water-soluble inks.
Alcohol-free baby wipes also work well for cleaning stamps.