Baking soda is a very effective pesticide wash and you should definitely try it.
BAKING SODA PESTICIDE WASH – RECIPE
Preparation and use:
Add a couple of tbsp. of baking soda in a bowl with some filtered water and put the fruits and vegetables in it. Leave them for 15 minutes completely covered by the water and after that wash them with some cold water. You can also use a brush and clad each plant individually.