Diluted Jeyes fluid seems to kill most things, but can leave a smell for a while afterwards.
The instructions used to recommend it for sterilizing greenhouse soil, but don't anymore. I think it might be because they would have to do the tests required by EC legislation to show it was safe in order to recommend it, despite generations of gardeners having used it for that purpose with no problems.
Rather like the Gardeners' Question Time panellist who, when asked how to get rid of greenfly, said that they used to just tell people to spray with dilute domestic detergent or washing-up liquid, but to use that method commercially under modern H&S requirements would now involve donning complete body protective clothing, because if you get soap in your eyes it will cause irritation. A panellist a few years later said you should wash the leaves with dilute detergent to wash away any dust, which was allowed, and if any greenfly got in the way, then that was just too bad.