08/06/2026
Case Study: Carpet Beetle Activity Traced to Infested Dog Biscuits
Situation
A customer reported ongoing carpet beetle activity, with the majority of sightings occurring in the kitchen area. Customer already used another pest control company, with little effect.
Initial investigations presented an unusual scenario, as there was very little carpeting within the kitchen. The only carpeted area was a pantry fitted with a synthetic carpet, which is not a typical food source for carpet beetle larvae.
Investigation
A thorough inspection was carried out to identify the source of the infestation. Given the lack of natural-fibre materials in the affected area, attention was focused on alternative food sources commonly utilised by carpet beetles.
During the inspection, a quantity of stored dog biscuits was found to be heavily infested. The dog food had become the primary food source, supporting the development and activity of the beetles within the kitchen and pantry areas.
Findings
* Carpet beetle activity was concentrated in the kitchen and pantry.
* The pantry contained only synthetic carpeting, ruling it out as a food source.
* Infested dog biscuits were identified as the source of the infestation.
* Beetles were feeding and breeding within the contaminated pet food.
Treatment
The infested dog biscuits were immediately removed and disposed of to eliminate the food source.
A comprehensive treatment programme was then carried out, including:
* Residual insecticide spray treatment to affected areas.
* Fogging treatment to provide broad coverage and target adult beetles.
* Treatment of the loft space as a precautionary measure.
* Treatment of carpets and flooring throughout the property.
* Treatment of the pantry and surrounding storage areas.
Outcome
By identifying and removing the true source of the infestation and following up with a targeted spray and fogging treatment, the carpet beetle population was effectively controlled. The customer was advised on proper storage of pet food and ongoing monitoring to prevent reinfestation.