About a week ago (23rd July), we found masses of tiny (<1mm) bugs (see 4-part pic ) on bottom of washing up gloves in kitchen sink. We had been away for 5 days. On Thurs (the 27th), suddenly noticed more not only on gloves, but along counter between sink and kitchen window. And then on bottom of storage containers in cabinet to rightt of kit window, above counter. 1000s over everything. Had never seen them before. Until we cleared out the areas, they clustered in masses of hundreds, usually under things, thus in the dark. We see no obvious central source, such as a nest. Cleaned out cabinet, sink area washed all containers. Still saw 1 / 2 wandering around counter behind sink on Fri and Sat. So, what are they, how might they have come into the house, and how do we get rid of them? We are a detached house, with outside brick walls. Note that the screw in one pic is 8mm accross. Thanks.