I dunno! I just put a few drops in the quart jar, a drop of Dawn dish soap, scrub it within an inch of its life with a bottle brush, especially the threads, use a paper towel to wash the outside, then rinse it about ... oh, I don't know, about 700 times, lol, then set it on a towel to air-dry. I use the same soapy water to scrub the plastic base. I may use the same soapy water to wash the next jar too if I have more than one.
I'm the same! But my reason is cocci. I used to have such a problem with it despite my regular cleaning protocol (germaphobe)... that I kicked it up a notch. It didn't help that the #1 response to my posts about sick chicks were that the waters must be filthy. Oy.
You know how I finally fixed it? Bottled water. I haven't lost any to cocci since.
But anyway, I was kicked out of the house with my chicken dishes. So I have a big tub, meant to be a muck bucket but never used for that. I like how tough it is for the purpose and it was cheap.
I put water in first, and then a quantity of bleach that makes me feel like I need a respirator. If the water isn't agitated the bleach lasts in the water a lot longer, I can get all the feeders and waterers we have done in multiple loads.
The hose on jet pummels most of the dirt off first, then into the bleachy water. Stir the cauldron with a long handled scrubby brush that I don't bother scrubbing with anymore (potent bleach does the work).
Then I take items out individually and set them on an old shower chair (holes in the bottom) which I found convenient for rinsing stuff off. I think our neighbors may think I'm a little cuckoo on chicken dishes days.
We live in FL so the intense humidity makes mold up in the top of the feeders when the feed dust clings on for a while, that's why I bleach at least monthly, more often if I see residue.
Mold is one thing I really don't like around chickens. Some can be so toxic, and even the most common mold can cause brooder pneumonia.
But aside from mold and cocci, I agree with exposing chicks to stuff, yet they do that themselves in the dirt.
I start all mine off with Probios in the water, and in times of stress like after shipping, a pinch of sugar.
I don't find electrolytes to do anything, really, those packets are just salt, and chickens don't sweat, and the feed has salt already at a level that's been studied nutritionally. Maybe sometimes a little could be helpful, but I think most new chicken owners are led astray by packages with names like "Save a Chick".