My son moved into a flat, which had been occupied by some Middle Eastern lads who left it in a total mess it wasn't cleaned out properly, they left so much behind, tbh it was disgusting for a newish flat .
The Letting agent had to get a team in quick to sort while my son was in situ.
After a few short weeks he noticed he was getting these spots? No idea why?
He went to the USA for 3 weeks, we picked him up from Heathrow. Aftet we left him we got a phone call from him, as he went to get into bed for a few hours, he saw it crawling with these little monsters. We told him to bin everything on his bed. Last thing he needed after a long haul flight.
We shot off to a local big Supermarket to buy him new pillows, quite and new bed linen. Even picked up a new vacuum cleaner for him.
Needless to say, he got onto the letting agency to complain as it wasn't up to standard when he moved in, as they were already aware.
They arrived next day to fumigate the flat and his bed (which was newish, it was ordered and used for a few months at ours, didn't come from ours ) his new sofa etc he did get some compensation for the agency, plus a return fumigation.
But absolutely disgusting little monsters, I will never forget what they looked like..