Bleach and lye are high PH bases that work well for disinfecting soft porous organic materials, membranes. It is known and said that there are alot of things bleach does not work for, AFB being one. For disinfection of -hard- protected- shells such as virus and spores of AFB and nosema, look for products on the other end of the PH chart - acidic low PH products.
Nearly every strong broad spectrum hospital grade disinfectant I have come across in research is acidic. I use to use a lot of bleach for cleaning and disinfecting. Nowadays I have a hard time finding a bleach jug around the shop. Suspect equipment here get fumigation, spray coating or soaking in acetic acid solutions. The really gross equipment get burned or dunked in a tub of dilute muriatic acid.
An interesting observation, perhaps a correlation, is that since using primarily OAV and Formic as mite controls, I have not seen any brood larvae diseases such as EFB AFB or sac brood, in years. The rare instances of chalk brood have also disappeared.
This info is merely one data point, and may spawn creative ideas that can work in your operations.
Hope that helps!