Gardening: (2016– ) in Food Traditions & Culture Posted April 9 1 hour ago, JoNorvelleWalker said: If I wanted to safely sanitize the soil capsules for my Click & Grow, is there a way to do it? I would use a solution of pure H2O2 as I described in a post above, or use a solution of a product called UC roots, which is hypochlorous acid derived from calcium hypochlorite. But, I don't know if you really want to do that. One of the reasons growing in soil works is because of beneficial bacteria and fungi living in the soil. Sanitizing your soil will kill anything bad growing in it, but will also get rid of all the good, and will make it more difficult for future plants to use that soil, unless you add some compost (which is full of beneficial bacteria and fungi). It might be better to use a product called Hygrozyme (or one of a bunch of similar products) which is an enzyme that breaks down cellulose. So, a soak in that solution will do a good job of breaking down any remaining dead roots in the soil, and turn them into products that are good for future plants - plus the spaces left by the roots add aeration to the soil. Then let it dry out which will get rid of anything anaerobic that could still be hanging around.