You are right about dilution, I meant to say but didn't that on some very greasy dried on stuff I have used it full strength and let it sit then flush a lot. This is a rare occasion. It is also kind off expensive to use wrong. I stand corrected.
We had a really nasty kitchen, fryer was 6' from refrigeration units, everything was wet with grease. I used one of the spray can condenser cleaners and nearly shutdown the kitchen, the stuff removed the oil but left a hard film on the coils. They had Dawn soap in the kitchen, so I tried it and it got the coils clean and it left a residue that would not allow the grease to adhere to the very old steel coils. No offensive odor or food contamination.
i have used used evap foam cleaner in the aerosol can and pump sprayer to flush out after foam breaks, just keep the shop vac running so you don't get water everywhere may need to do it a few times but it works
I have used oven cleaner and then washed with water in the past.
and rinsed for 10- 15 min I hope , if it is that restaurant heavy duty that an owner took out his condensers on two stores without enough rinsing.
I use refrigeration biodegradable 4:1 as on bottle and it really works well, no acid.
Dawn is great for puncture wounds too and soaking cuts 30% to 70% water !- just like the doc used before 5 stitches went in to my palm