Hi all, I've found about 30 of these critters over the last month or so. Usually on the kitchen worktop but now also the occasional appearance upstairs in the bathroom. Would really appreciate identification and advice as to where they are coming from. I thought they might be woodworm but can't find any holes. Many thanks, Paul ps their approx 3mm long.
I treated for another type of wood borer today (I'm a pest controller). In my case it was the wharf borer. The wharf borer had been coming out of a skirting board behind a couch in a living room. On investigation the borers were found to be eating through wet and mouldy wood in the staircase, which was behind the wall with the couch against it. Basically you need to identify the areas you've seen the insects and try and work out where the wet and damaged wood is.
I don't know where the stairs in your house are but I'd suggest having a look at the underneath of them. I had to cut a small hole in plasterboard (in an under the stairs cupboard) and put an inspection camera through to find where the damaged wood was. Then from there I had to cut a larger hole to treat the wood with insecticide. Now its a job for the carpenters to replace the bottom 3 stairs. A big job!
It maybe somewhere else in your house though like floorboard etc. So have a good look round before demolishing your house.
This photo shows the damage to the right side of the board on the bottom 3 stairs. The left side is how it should look. If you look on the right again you can see the eaten timber remains on the floor. The stairs have become structually unsound because of this pest.
Im not to sure on how far they could walk as such but they emerge from being the larva (the eating phase in the wood) to be the adult (the mating phase thats on your work surface). So they maybe looking to mate and lay eggs back in the wet timber their eating. You need to carefully look around for the damp wood (it may be in the wall or under the floor). Treating the surface of the wood with insecticide should do the trick unless the wood is absolutely riddled and needs replacing.
It must be somewhere connected with the kitchen surface and whats above, behind or under it. Concentrate your search there and if thats not successful maybe consider getting someone in who deals with property care and wood boring insects.
The call I dealt with today was very advanced and the customer had been seeing them for a long time so don't panic your problem won't be as severe.