Before you microwave your dish sponge, you need to saturate the sponge with clean, warm water. Fill a dish with 1/4-1/2 cup (59 - 118 ml) of clean water. Rinse your sponge in warm water and ensure that any food scraps are removed. Then, place your sponge in the dish of water. Let the sponge sit for 5-10 minutes, until most of the liquid has been absorbed. Once your sponge has absorbed the water, place the sponge onto a clean paper towel.
Fill a dish with clean water. Remove any food scraps with water. Place the sponge on a paper towel.