Christopher
Moderator
That grease doesn't maybe have roaches, or smell, and you are using a wand. Our first tool of choice is a scraper, the chems, then a wand. Some times just a hose will do to.
That is a very good point, I did not know that those vents had roaches in them, I guess they love fried foods too? hahahahaha Everyone and everything loves fries. hahahahaha
I have seen a lot of videos over the years of the vent guys cleaning, some very dirty jobs there, you guys really earn your money.