We also have dirt. I vacuumed about 150 kg of quartz sand. It was the surplus from the asphalt. The further along you are in construction, the cleaner the work should be done. This only has limited to do with the price but rather with the craftsmen's standards for themselves. You just talk to tradespeople who don’t pay attention or clean up. If that doesn’t work, the next authority has to be involved. That did not happen with us. Sure, if you only want cheap cheap, it probably won’t be that clean either...