Carpet moth infestations have increased dramatically across London in recent years, driven by the growing popularity of natural fibre carpets and rugs, warmer winters, and the rise of central heating creating ideal breeding conditions year-round. The damage caused by carpet moths is entirely preventable with early professional intervention — but left untreated, the consequences can be extremely costly:

• Irreversible carpet damage — carpet moth larvae chew through wool, silk, and natural fibre carpets causing bare patches, thinning, and holes that cannot be repaired
• Destruction of valuable rugs — antique, Persian, and handmade rugs made from natural fibres are particularly vulnerable and can lose significant value through moth damage
• Damage to soft furnishings — upholstered furniture, curtains, cushions, and other natural fibre furnishings are all at risk from carpet moth larvae
• Rapid spread through properties — carpet moths spread quickly from room to room and floor to floor, making early treatment essential to prevent a localised problem from becoming a whole-property infestation
• Year-round breeding — unlike many pests, carpet moths breed continuously in centrally heated London homes, meaning infestations can develop and cause damage at any time of year
• Costly replacements — replacing damaged carpets, rugs, and furnishings can run into thousands of pounds, making professional treatment a highly cost-effective investment

Understanding the Carpet Moth Life Cycle

Understanding how carpet moths develop is key to eliminating them effectively. There are four life stages:

Egg
Female carpet moths lay between 40–50 tiny, white eggs directly onto natural fibre carpets, rugs, and furnishings — typically in dark, undisturbed areas such as under furniture, along skirting boards, and in room corners. Eggs hatch within 4–10 days in warm conditions.

Larvae
The larvae stage is where all the damage occurs. Carpet moth larvae are small, creamy-white caterpillars that feed continuously on natural fibres — wool, silk, cotton, cashmere, and other animal-based materials. Larvae avoid light and burrow deep into carpet pile, making them extremely difficult to detect and eliminate without professional treatment. The larval stage can last several months depending on temperature and food availability.

Pupa
Larvae spin a silken cocoon and pupate, often in concealed areas along skirting boards, under furniture, and in carpet edges. The pupal stage lasts 2–4 weeks before adult moths emerge.

Adult Moth
Adult carpet moths are small, golden-brown moths approximately 14–18mm in wingspan. Unlike clothes moths, adult carpet moths can fly and are capable of spreading infestations between rooms and floors. Adult moths do not feed on carpets — their sole purpose is to mate and lay eggs, beginning the cycle again.

Effective professional treatment must target all four life stages to achieve complete elimination.

Common Carpet Moth Species in London

Case-Bearing Carpet Moth (Tinea pellionella)
The most common carpet moth species found in London homes. Case-bearing carpet moth larvae are distinctive — they carry a silken case made from fibres as they feed, leaving characteristic trails of damage across carpet surfaces. They prefer darker, undisturbed areas and are frequently found under heavy furniture.

Common Clothes Moth (Tineola bisselliella)
While primarily a clothes moth, the common clothes moth also targets carpets and rugs made from natural fibres, particularly in areas with low light and foot traffic. Increasingly common in London homes with underfloor heating.

Tapestry Moth (Trichophaga tapetzella)
Less common but highly destructive, tapestry moths target carpets, tapestries, upholstered furniture, and animal-based materials. Found in older London properties and buildings with undisturbed storage areas.

Signs You Have a Carpet Moth Infestation

• Bare patches, thinning, or irregular holes in wool or natural fibre carpets — particularly in corners, along edges, and under furniture
• Damage concentrated in darker, less disturbed areas of your carpets and rugs
• Small, golden-brown moths flying close to floor level or resting on walls and ceilings
• Silken tubes or cases on carpet surfaces — the distinctive feeding cases of case-bearing carpet moth larvae
• Tiny white larvae visible on carpet surfaces when furniture is moved
• Shed pupal cases along skirting boards and carpet edges
• Damage to natural fibre curtains, upholstered furniture, or stored rugs

If you notice any of these signs, contact Pescon immediately — the sooner treatment begins, the less damage your carpets and furnishings will sustain.

Our Carpet Moth Control Treatment Process

🦋 Step 1 — Detailed Inspection & Assessment

Our certified technician carries out a comprehensive inspection of your entire property — checking all carpets, rugs, soft furnishings, skirting boards, and storage areas for signs of carpet moth activity. We identify the moth species, map all affected areas, assess the severity of the infestation, and determine what conditions are allowing the infestation to thrive. A full assessment report and treatment plan is provided before any work begins.

🦋 Step 2 — Professional Treatment Programme

We deploy a comprehensive, multi-product treatment programme specifically designed to eliminate carpet moths at all four life stages:

Residual Insecticide Treatment
A professional-grade residual insecticide is applied to all affected carpets, rugs, skirting boards, and soft furnishings — killing larvae and adult moths on contact and providing ongoing residual protection for weeks after treatment. Our products penetrate deep into carpet pile to reach larvae hiding at the base of fibres.

Insect Growth Regulator (IGR)
IGR is applied alongside insecticide treatment to prevent eggs and larvae from developing into adult moths — breaking the reproductive cycle completely and providing long-term protection against reinfestation. IGR is not available in over-the-counter products and is a critical component of effective professional carpet moth treatment.

Crack & Crevice Treatment
Insecticidal dust is applied along skirting boards, into floorboard gaps, and behind architraves — targeting pupal cases and larvae harboured in the areas most commonly missed by DIY treatments.

Furniture Treatment
The undersides and backs of upholstered furniture, sofas, and chairs are treated where carpet moth activity has been identified — ensuring complete coverage of all harbourage areas throughout the property.

🦋 Step 3 — Preparation & Aftercare Guidance

Before treatment, our technician provides full preparation instructions to maximise treatment effectiveness. After treatment, we provide detailed aftercare guidance including vacuuming schedules, furniture repositioning advice, carpet protection measures, and recommendations for natural fibre storage to prevent future infestations.

🦋 Step 4 — Follow-Up Visit & Guarantee

Carpet moth infestations can be persistent and may require more than one treatment visit, particularly for severe or whole-property infestations. We carry out a scheduled follow-up visit to assess treatment effectiveness, retreat any remaining activity, and confirm full elimination before closing the job — all covered by our retreatment guarantee.