The Honest Answer On Rate
- One larva eats a very small amount over two to three months. You would never see it
- A first generation in a new location typically leaves nothing anybody notices
- By the second or third generation there is usually a visible patch under something
- After that it compounds, because each generation is larger than the last and feeding in the same place
So this is not a linear process. It is slow, slow, slow, then obvious — which is why people describe damage as having appeared suddenly when it did not.
What Makes It Faster
- Warmth. A consistently heated house compresses every stage and can produce generations back to back through the winter. A cool one gives the cycle a natural pause
- Stillness. Nothing disturbs, nothing gets vacuumed away, nothing gets crushed underfoot
- Food quality. Wool carpet with soiling in it — body oils, food traces, pet hair — is fed on in preference to clean fibre
- A concentrated food source. Old felt underlay beneath the carpet is a larger meal than the pile above it
- Nobody in the room. Which is the one that matters most here
The rarely used room is the fast one. That sounds backwards, because nothing is going on in it. But damage accumulates as a function of uninterrupted feeding, not of activity — and a room nobody enters offers no interruption at all. A guest room can be further gone than a living room that has had the same population twice as long.
What Slows It
- Being walked on — traffic genuinely suppresses it, which is why damage is rare in the middle of a busy room
- Regular vacuuming, especially at the edges, which physically removes eggs, larvae and debris
- Moving furniture, even occasionally
- Cooler rooms, which stretch the larval stage out
- Light and air, neither of which they tolerate
Rough Milestones, For Calibration
Not a formula — houses differ enormously. But the shape holds.
- Months 1-6: nothing visible. Feeding under one item
- 6-12 months: a patch that would be obvious if anyone moved that item. Adults occasionally seen and dismissed
- 1-2 years: a clear bare area, and eggs laid in the adjacent room
- 2-3 years: several areas, more than one room. A carpet may now be a replacement rather than a repair
The Practical Consequence
The treatment costs much the same whenever you do it. What changes with time is how many rooms are in it, and whether the flooring can be patched or has to be replaced — and replacing wool carpet in a large room is a multiple of the treatment.
Treatment starts from £220. If you have found a patch, mark its edge in pencil with the date and photograph it. Whether it grows over the next month tells you more than any estimate of rate.
Carpet moths in Ascot? Pest Services Berkshire treats carpet moths from £220. Carpet Moth Control in Ascot has the full detail, or call 0118 336 1366.