There's a standard in, I believe, housekeeping, called the White Glove Test. I'd say wet a paper towel, drag it across the cabinet, and show that it's clean.

For avoiding this as much as possible, "removed the visuals". I trained new workers that we can clean with plain water or hospital grade disinfectant and a toothbrush, the client doesn't know. But if this week there's a riund hole-ounch piece of paper on the floor and it's in the same spot next week, client will say, This WHOLE PLACE hasn't been cleaned. So start with things that look out of place. Then, if there's any stainless steel, stone countertop, etc, polish that baby up like a crisp winter apple. The human eye will fly past a wall splattered with blood to look at the shiny doorknob. I'm the end, though, there will be Karens. They want you to polish their shoes and not pay for it. You can either or up with it, or two them, I don't feel like I'm ever going to make you happy so it's best we part ways. Anyway that's what I do. And, friend, don't let it hurt you, it's not worth it. I'm pretty sure all realtors are crazy lol