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the window cills and outside walls have loads of these crawling around,also its bad in the village as well,
no bigger than a pin head,if you squash them on your upvc windows,you cant get the stain off,,antone else being invaded
Are they attacking your plants?
My grandad used to swear by organic destruction of these pests.
Find the source and spray with a solution of water and habanero peppers.
Chop up peppers and simmer in the water for half an hour and spray plants once cooled.