When my ex and I were still together he refused to pay a painter and decorator to do our hall/stairs/landing. He would do it himself - why pay someone who knew what they were doing, eh?!
He and the pal who helped him were heading for the pub as I was parking the car, having picked up our toddler from nursery. I opened the front door and discovered that not only had they not bothered putting away paint tins, trays, rollers before they went out, but that there were pools, actually pools, of emulsion paint all over the floor! I had to find a neighbour to watch my DS while I went back and cleared it all up. The carpet was ruined, there was paint all over the lovely woodwork which I had spent hours covering up, he had missed bits, and there were what looked like paint covered caterpillars at the top of the wall above the radiator - this is what happens when you use a roller to apply emulsion to a dusty wall. The last thing I said before I left that morning was to dust the wall above the radiator.
Fortunately we had accident damage cover on our insurance. Ex was insulted that I was going to make a claim on this. What, did you do it on fucking purpose?!
Insurance sent out loss adjuster who looked at the mess and asked why he hadn't used dust sheets. Believe it or not, he had, but still managed to fucking pour paint on the carpet.
Insurance paid out.
Ex husband said what was I pissed off about?
After all, he'd painted the hall, hadn't he?!
I should have been grateful.