I think some people saying a dirty house wouldn’t stop them perhaps haven’t experienced the level of filth and smell some of us are talking about. It’s not being a bit messy and dusty and a sink full of plates.
When I was doing frontline work, I went to some houses that were so filthy that I would make them my last visit of the day so that I could come straight home, strip off, chuck every item of clothing I was wearing in the washing machine and jump straight in the shower.
The worst was a client I was taking over from someone else. I'd never visited before and hadn't had a handover chat beforehand. I had to wait for my colleague for quite a while and was busting for a wee by the time she got there. As soon as we got in the door, I had to ask to use the client's bathroom. The hallway seemed presentable, the living room looked tidy as I glanced in and it didn't smell bad at all.
I have a strong stomach, but when I got in the bathroom, I nearly puked. It looked like the IRA had held a "dirty protest" in there. There was shit everywhere - actual faeces. It was smeared on the walls, the floor, the sink, the taps, the toilet cistern. I couldn't just piss on the floor, so I carefully hovered over the lav, while holding my trousers legs all gathered up, so they didn't touch the floor. Then I managed to get a few sheets of bog roll without touching anything else, blotted with some of it and use another sheet to prevent contact with the flush. I saved a sheet so I didn't actually have to touch the door handle with my fingers, then dropped it into to lav, and I decided it was more hygienic to leave my hands unwashed than to touch the taps or dry them on anything that was in there.
When I got back into the living room, I opted to sit on a dining chair with a plastic seat as the thought of sitting on the sofa was too vom-inducing. The plastic seat felt ever so slightly sticky, but nothing too untoward.
The client started to tell me how they were waiting for bladder surgery but had to lose 5 stone before it could go ahead. Consequently, they were constantly leaking urine.
Then it dawned on me that the chair seat was sticky because I was actually sitting in someone else's piss.
That was the last time I ever took over an existing client without getting a full handover! And "Passing the P&T test" became in-house shorthand for a home clean enough to risk a pee and a cuppa.