I personally saw the guy come in and clean every room with a hoover/steamer pipe thing and he sprayed the floor too before doing his business.
The tenants moved in and are saying their children’s clothes are turning black crawling on the carpet as well as their socks.
I’ll be in touch with the carpet cleaner so to why this could be happening but I got the carpet professionally cleaned at the start of their tenancy as asked
What would you do in this situation?