So - something has been eating or otherwise removing the carpet fibres without leaving a trace, and you want to know the agent.
...Or have the traces been removed? ...For instance by the vacuum cleaner?
What is the history of these patches?
Did they appear one after another, or did the all appear and gradually get larger?
Or did you come home from holiday and find them as in your photo, so you don't know how they progressed?
Please spell out the history if you can.
- Have their been pets in the room?
- Is this the only room affected?
- In what country are you?
I'm in the UK - Midlands - Leicester
Just one room is affected, we dont have any pets.
The carpet fibers are removed without being hoovered and the patches become larger and have appeared one after another
This has been ongoing for nearly 11 months now, the carpet has been replaced 3 times, the patches appear in the same area, the room has had treatment twice by a local proffessional pest company.
Originally it was classed as carpet beatle, but the carpet is not wool and there is no trace of larve
I see your quandary!
This is clearly a tricky problem.
My thought goes to a nocturnal creature harvesting the fibres for nesting.
I can hear you saying 'but there have been no mouse droppings'.
Still, that's my best guess at the moment.
And if I were in your shoes, despite the expense and complication, I'd buy and set-up a motion-sensing webcam, and leave it operational 24hours a day. You could put it under the bed so you wouldn't trip over it or tread on it.
If you do so, and if you catch the demon carpet eater, please let us know!
No Mouse droppings mate, it has been a thought regarding the web cam, i will let you know once i find out.
i would be inclined to try some DIATOMACEOUS EARTH, given the history.... and dont hoover for a week...
Thanks, will give it a go.
so far we have used the following treatment -
ULV 500-4.8% Phenothrin, 2.4% Tetramethrin, 8% Synetgist
K-Othrine WG250 25% Deltamethrin
Forgot to mention the room was also fogged out
none of the treatments will have penatrated 100% unless saturated.
i like Mikes idea, but i'm unsure whether it will produce any hosts if they are tiny...
how about some gaffa tape (duc tape) around the hotspots ? or send me an email i'll post you some insect detectors (glue boards) which are semi impregnated to see if these produce any suspect, however your bog standard pest companies should have offered this standard service if no physical evidence of which pest is found.
regulations on pesticides say you cant simply apply for any guess work.
I don't know much about insects etc but could it be that whatever it is, is pulling the fibres from underneath and is living in the underlay? Just a thought :)
Thanks for the response - i have removed the underlay and checked under the floorboards, found nothing.
Now that there is no carpet in that room - whatever it is has now moved to the next room.