Rubber boots are generally worn when it is raining to protect your feet from getting wet; they are also worn by fishermen, farmers and other people who work in wet environments. After owning a pair of rubber boots for a long period of time, you may notice a few cracks here and there. You might think it's time to throw away your boots and purchase a new pair, but with a bit of silicone glue, you can easily fix the cracks.

Mix some decreasing soap with lukewarm water. Wash the entire boot with a sponge. Rinse the boot with water and towel dry.

Place your thumb and index finger on each side of the crack in your boot. Spread the sides apart, opening up the hole enough to squeeze a bit of silicone sealant into the crack. Apply the sealant generously, but do not go overboard. You do not want the repair to be noticeable.

Press the two sides of the crack together, holding for about 30 seconds. (Refer to the directions on the sealant, as the times will vary by brand and type.) Allow the sealant to dry for 24 hours.

Test to see if the crack is fully sealed. To do this, place your boot in water for 15 minutes, making sure that the water goes above where the crack is but also that the boot is not fully submerged. If the inside of your boot is wet when you take it out of the water, you may have another crack or hole.

Check for any additional cracks or holes. If you find any, repeat Steps 1 through 4 as many times as necessary.