How to Use the Vegetable Pesticide Wash Guide
For vegetables you eat skin-on — lettuce, leafy greens, cherry tomatoes — the washing method makes a real difference in how much pesticide residue actually comes off. This calculator takes your washing method (running water, baking soda water, vinegar water, or produce wash detergent) and soak time, then shows an estimated residue removal rate along with a tip for that method.
Just rinsing under running water for 30 seconds to a minute removes surface dust and some residue, but the effect is limited. Soaking for about 5 minutes in baking soda water (1 tbsp baking soda per liter of water) or vinegar water (3 parts water to 1 part vinegar), then rinsing under running water, noticeably boosts the removal rate. A produce wash detergent needs to be diluted to the concentration on the label to be both effective and safe.
Longer isn't always better. Removal gains typically taper off after 5-10 minutes, and leafy vegetables soaked too long can lose water-soluble nutrients or turn mushy. After soaking, always give everything one more rinse under running water to wash away any leftover detergent, baking soda, or vinegar.
Frequently Asked Questions
Studies generally show a vinegar solution (3 parts water to 1 part vinegar) removes slightly more pesticide residue than baking soda water, but both clearly outperform rinsing under running water alone.
No. Removal gains taper off after about 5-10 minutes, and soaking too long can cause nutrient loss or mushy texture, so it's best to stick to the recommended time.