These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Bar Rescue
Nightmare Fuel: The below-mentioned "Headhunters". When the exterminator went through and showed the owner's (unpaid) employees just how much filth they had been working in for the past few years, they were all visibly disturbed. Before that, there was the live performance by the band "Miscarriage", which horrified and offended pretty much all who witnessed itnote For the curious, it involved the band acting out ripping a fetus out of a woman's body.
"Fairways" kitchen was almost as horrifying, it was so bad that there was thick mold and spores in the freezers, Jon and the others were worried that it was Black Mold(which can be fatal), thankfully it wasn't.
Squick: While a number of bars have their hygiene issues, "Headhunters" was just plain unsanitary. From cockroaches ending up in the liquor bottles to mold in the ceiling, almost every inch of the place was enough to get the entire place shut down by any public health authority on the planet.
The kitchen at "Fairways" was unbelievably digusting, so much so that it makes the ones on Kitchen Nightmares look downright sanitary by comparison(the health inspector with 14 years experience that Jon brought along said it was the worst kitchen he had ever seen). Every inch of the place was covered in sort of dirt, grease, slime, etc. But the worst was the walk-in freezers, one had such bad mold that Jon and the others started coughing as soon as they entered, and the other freezer had spores growing out of the wall.
What an Idiot: A given reaction to anyone who calls Jon in, only to start immediately rejecting any kind of suggestion he makes towards improving the business. Most of the time, they only need some cajoling to get the business on track, but a few go back to their old ways when Jon leaves.