This won't be popular here, but away we go.
I now use bleach to kill the ookies in my 22 oz glass bottles,
after soaking in Oxygen brewery wash. I use a small medical
syringe (no needle) to squirt a tiny bit in each bottle, fill with water,
let sit over night, dump then rinse.
Don't use bleach on metal. Occasionally I use bleach on my
Speidel HDPE fermenters. It whitens the fermenters which
overtime get tinted brown.
I forget offhand what the water/bleach ratio is for food service no rinse level.
You can search online for that, I use it sparingly often half of that.
The downside is I wear nitrile gloves, and even a spec on your clothes or
elsewhere your cooked. Although specs of Iodophor is no bargain either.
Years ago I had specs on the inside of the brown glass bottles, seen when held
up to the light. There is a thread here about my plight, can't find it.
Tried everything, bleach was the only thing that worked.
Cheers