Chlorine dioxide is a powerful, EPA-registered antimicrobial agent used to sanitize lettuce and wash water, primarily to prevent cross-contamination from bacteria like E. coli and Salmonella. It is highly effective at low concentrations and leaves behind fewer harmful byproducts than traditional free chlorine.

For home preparation, specialized chlorine dioxide produce washes are available, or you can use safe, diluted commercial drops. To wash lettuce at home, follow this process:

• Prepare the solution: Fill a clean bowl with 1 gallon of cold water. Activate the chlorine dioxide drops according to the package instructions (usually about 5 to 10 drops of the base and activator mixed together) and stir thoroughly into the water.

• Soak the leaves: Submerge the lettuce leaves in the bowl and allow them to soak for 1 to 5 minutes.

• Rinse thoroughly: Remove the lettuce from the sanitizing solution and rinse the leaves thoroughly under clean, running tap water to remove any residual solution before serving or eating.

While chlorine dioxide is highly efficient at killing pathogens suspended in the water, it cannot always penetrate and kill bacteria that are already deeply attached to the lettuce's surface. As a result, it is primarily valued for stopping the spread of pathogens from one leaf to another during the cleaning process.

Everyone should have a Chlorine Dioxide "Kit" at home. ClO2 is sometimes referred to as: MMS - Miracle Mineral Solution

However, it's available many places online, including Amazon.

It is IMPERATIVE that you properly mix the Chlorine base chemical with the acid solution (often 4% HCL acid) in order for it to be effective at creating the Chlorine Dioxide gas necessary to sanitize.

You ALWAYS activate the chlorine in a small vessel, like a shot glass, tilted on an angle, so the droplets can concentrate to one "corner". You MUST then allow time (at least 30 seconds, but not more than a minute) for the reaction to be complete.

In nearly all situations, the two solutions are mixed at a 1:1 ratio - drop for drop. After waiting for activation, the solution can be mixed with water in the desired concentration or introduced to the wash water.

I like this kit from Amazon for $27: Chlorine Dioxide Kit | Hydrochloric Acid 4% (HCl) : Sodium Chlorite Solution 22.4% (8oz) Liquid Set https://a.co/d/0iGPPN3D - but there are other options as well. Use your discernment.

Good luck!