Hi

We moved into a 1930's house a few months back in the countryside and all was well. However, about 9 days ago, these little bugs appeared in the bathroom on the bathroom window sill.

At first I thought it was just dust, as they are really tiny (about 1mm I'd guess). However I saw them moving slightly so investigated further. They're black (although some (albeit a few only) are very, very white, no other colours I can see, might be two different things, the white ones are impossible to make out), very small, hardly move at all, don't fly and don't jump.

At first I thought they were baby spiders, but not after taking the photograph (attached).

I then found them all over the bath, up the walls, over the ceiling a little and over the tiled shelf and, eventually, the floor. They mostly seem to like the white goods in the bathroom, but also the corners of the room.

As of Saturday-Friday last week, every time I wet a piece of tissue and run it around the bathroom floor along the edges, I would collect about 1000 of them. I'm estimating that based on wetting one sheet of paper, doing a small area and then counting, as best I could, how many were on the sheet of paper. By the time I got only 1/4 of the way round, the paper was almost black. I did this twice a day.

I sprayed a Raid beetle and spider spray but they didn't seem to die (it did seem to kill some, but then some were still happily moving).

However since Saturday I've been clearing the bathroom of about 200-300 a day, rather than a couple of thousand. So their numbers appear to be declining.

We have recently had new windows installed, so they may have been disturbed during that, but that was three weeks ago and they only showed up just over one week ago.

They've also appeared in the next door bedroom, again on the white plastic window sill. I haven't found them anywhere else, but because they're so small, I doubt I would really.

Any help greatly appreciated, as they're getting all over the flannel, hand towels, shaving equipment, bath (at it's worst, they were crawling over both top edges of the bath, to the point that it looked pebbledashed with black paint), etc. etc.

The photo isn't great (especially the one I have zoomed in on), but I can't stress enough how small they are, and I couldn't get a better picture than this.