For reference, these moldy fungal blooms were found growing inside a fridge.
- The threat of Floorboard Failure due to dry rot at J.A. Murphy's. The entire building was condemned, necessitating several days worth of repairs and no idea when the remodel of the bar could resume.
- Headhunters in general. 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 (except the owner). Before that, there was the live performance by the band "Miscarriage," which horrified pretty much all who witnessed it. note
- "Fairways"'s kitchen was even more horrifying with thick mold and mushrooms in the freezers. Taffer and the others were worried that it was black mold (which can be fatal). Thankfully, it wasn't. However, it caused Jon to lose it: he shut down the restaurant and flung a plate of nachos away, bellowing that the food was unsafe to eat.
- It's disturbing how often the bars have awful hygiene, and it's not always immediately obvious. For example, Swanky Bubbles always cleaned the surfaces of the bar and kitchen but never cleaned inside the refrigerator, oven, or dishwasher. Makes you wonder how clean your favorite bars and restaurants are.
- During recon at the End Zone (later the Houston Sports Hub), two female co-workers (Taylor and Stephanie) end up in a shoving match and have to be pulled apart. But when one of the co-owners punches out the computer screen in a fit of frustration, they wind up getting into a match of their own and have to be pulled apart themselves. Jon decides, with no dispute from his experts, to come back in the morning.
- Matthew Overmyer, co-owner of the infamous "O Face" bar, puts everyone else to shame. He was arrested for sexual assault and will be a registered sex offender for the rest of his life.
- The whole bar in general was a hostile environment with behavior ranging from reckless (a bartender breathing fire near a fan and a low ceiling) to flat-out abusive (the fight between Cerissa and Amanda).
- Chris Ferrell, the owner of the re-christened "Pit and Barrel" in Nashville was arrested after he shot and killed country singer Wayne Mills during a dispute just months after the bar's relaunch. Unsurprisingly, that episode can only be found online and has never aired on public television since its accidental showing in the encore timeslot. The bar itself has since been demolished.
- Taffer's freakouts, in general, can be this especially when he throws bottles against the bar floor, not caring that glass shards could fly and hurt someone. His experts have sometimes gotten in on this as well. In later seasons, someone on the production staff must have pointed this out, so now they toss these items into conveniently placed garbage cans.
- One episode had an untrained cook who only took the job to help his family. He did such a horrible job cleaning the fryer that when it caught fire, Jon couldn't put it out with salt because it had reached the vents. So they grabbed a fire extinguisher to put it out, and it too was so badly maintained it wouldn't work properly. They ended up having to evacuate the building, and luckily they found a second fire extinguisher that did work. Luckily no one got hurt.
- "Rhythm & Brews" had a biker throw firecrackers at a bartender's feet. They went off, jeopardizing the safety of the bartender and several patrons, including an expert's wife. Miraculously, no one got hurt.
- One owner of "Kid Chilleen's Badass BBQ" rides his horse into the bar... and it immediately wipes out. This is agonizing to watch if you care about animals at all. Thankfully, it's unharmed, but Jon is aghast and points out it's a miracle the horse didn't break a leg and didn't need to be euthanized.
- Unlike the fight at "Artful Dodger," which was hilarious due to it just being a bunch of drunken rowdy teens causing a ruckus, the fight at "Undisputed" was genuinely terrifying for being burly thugs who ganged up on a crewman and nearly resulted in someone actually getting hurt, resulting in the cops needing to be called. The next scene reveals that this is a regular occurrence and people have quit due to fear of their safety.
