Wet a washcloth with water.
Pour a small drop of detergent onto the stain.
Scrub the stain with the wet washcloth.
Rinse out the detergent with water. Rinse out the washcloth and wipe away the soap if the item with the stain cannot be rinsed.
Sprinkle baking soda over the wet stain. Gently rub the baking soda into the stain. Allow it to sit for 30 minutes. The baking soda may turn green from the avocado stain.
Wipe away the baking soda with a washcloth.
Brush away any remaining baking soda after the baking soda dries.