When I worked at a pizza joint, we had a bus boy who mixed ammonia and bleach to clean the ice machine one day when it was slow. It was one of the large units you could scoop a 5 gallon bucket of ice out of at a time, and he was halfway leaning into it to scrub the bottom when we found him passed out from the fumes. We had to close and so did the stores on either side of us in the complex due to the fumes. Dude spent 3 days in the hospital.
Do not be dude.
Do not be dude.