We’ve had plasterers in this week and they’ve created an unholy mess: dumping dirty water over my flowerbeds (turning my plants white), tracking plaster through the house and all over the patio, leaving splashes on walls/windows/skirting/sockets. It’s the last day today today, can I insist that they fix all this before leaving? They covered the carpets upstairs but not right up to the edges, and my tiled floors downstairs are absolutely caked including the bathroom. They were NOT cheap, we’re happy with the actual job but not the mess. Is it expected that they’d clear up after themselves?