Hi I'm hoping u can help I live in Scotland which isn't a very warm country but every year when the weather is nice I'm finding these tiny little black or grey bugs around my windowsills I kill them everytime I see them bleach and clean regularly around my surfaces and still can't seem to get rid of them. They can fly which I've noticed and most of them seem to already be dead. I've spotted a few on my laminate flooring and walls I have vents on my window a which I think they are entering from. There giving me the creeps now I've searched every website and nobody seems to know what they are called and how to prevent them? Can u help please I've attached a picture which is zoomed in they are very small but do come in diff sizes and look grey or black from a distance but up close they have a pattern on them