Heidi Fleiss is being forced out of her place of business in Las Vegas, TMZ has learned --after the former Hollywood madam allegedly turned the place into a dungheap.
Heidi's landlord served her with an eviction notice on November 21st -- demanding she clear the premises of her dog-grooming business "Dirty Dog Laundry" asap -- but we're told, she hasn't moved jack.
Sources tell us, the landlord served her because Heidi hadn't been paying her rent -- and worse ... she turned the place into a dump.
Heidi tells us, she gave up on the business months ago because she's planning to move back to L.A. -- and handed the place over to a friend ... who promised to take care of it.
But clearly, her friend dropped the ball -- because we're told the place is still a giant mess. And the landlord is pissed ... telling friends, she'll clean the place out himself if she has to.