Over the years I've had loads of trade people left in my homes.
When I was living with my ex we had a guy in to plaster the chimney breast. I let him in then went off to work. You wouldn't have known he'd been in when we got home.
Then there was the artex guy, been used by ex's family for years, we'd done one room at a time so he'd been in our home 5/6 times. Sometimes alone for a while, sometimes I was in. The final time he came I had to go out pretty much straight away as I was working away. He asked me if he could smoke in the house, (never asked before just gone outside) now it was a nice day, I was a smoker but never inside, so I said 'I'd prefer it if you didn't, Ex hates smoking, even I don't smoke inside' 'no problem' he said. And off I went.
ex got home from work at 10pm that night and phoned me, the guy had poured artex down the drain, used the bathroom upstairs (brand new) and there was artex all over the taps, flusher etc, and walked into the carpet, all over my fridge, kettle, tea pot. I mean every where. In the past he'd always left my house spotless. Ex said it was my fault for asking him not to smoke in our house. (If I'd have let him I'd be at fault too though)
But this is only one guy, the builders, electricians, plumbers, more recent plasterer have all been fantastic.