There's one thing that's even more disgusting: cleaning laptops with roaches, spiders and moldy food leftovers in the HS vent.
Once I had a client (a friend of a friend), who'd buy old shit for restoration and re-sale, and nag me to fix it if there is a hardware problem.
Once he brought over a couple of old Fujitsu laptops. As soon as I took off the bottom cover and saw dead roaches, I told him to take this shit and f#@K off. Haven't seen or heard from him since then.
Another "worse than pubes" situation is when you get a so-called "kitchen laptop", which is my totally not made-up term for laptops used either to shut up loud kids by playing cartoons during dinner/supper, or bought as a present for aunt or grandma for the sole purpose of watching recipes on Youtube. Basically once you add a long-term exposure to food and drinks into equation, it gets really bad.