Pharaoh ants – small insects, big problem

October 21, 2025
Pharaoameisen – kleine Insekten, großes Problem
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The pharaoh ant is tiny, measuring just two millimeters, yet it can cause considerable damage. Its colonies often consist of several queens, allowing them to multiply rapidly and making them difficult to control. This ant species feels particularly at home in warm buildings such as kitchens, hospitals, hotels, and residential buildings.

An infestation is not only a nuisance – pharaoh ants are considered hygiene pests because they can spread pathogens. Conventional household remedies or sprays are usually ineffective and may even worsen the infestation because the colony splits and forms new nests.

How to recognize an infestation

Pharaoh ants are small, pale yellow to reddish in color, and form conspicuous trails – usually along walls, heating pipes, or in kitchen areas. The nests are often hidden in warm, hard-to-reach areas such as cavities, electrical installations, or beneath baseboards.

Effective control – the right approach

  1. Thorough hygiene: Do not leave food scraps exposed, clean work surfaces regularly, and dispose of waste in sealed containers.
  2. Seal entry points: Seal cracks, joints, and cable penetrations to prevent new nests from forming.
  3. Use targeted baits: Instead of sprays, bait is the most effective method. The ants carry the active ingredient into the nest, where it reaches the queens and larvae.
  4. Be patient: Sustainable control takes several weeks – only consistent action leads to success.

Our product recommendation

For targeted control of pharaoh ants indoors, we recommend the BIOPREN Pharaoh Ant Bait.
The product contains the active ingredient S-Methoprene, an insect growth regulator that stops the development of ant larvae and prevents the queens from laying eggs. This gradually starves the colony until it collapses.

Advantages of BIOPREN Pharaoh Ant Bait:

  • Ready-to-use bait stations – simply place them, no mixing required.
  • Transparent stations for monitoring bait acceptance.
  • Works directly in the nest – not just on the surface.
  • Ideal for use in kitchens, hotels, hospitals, and living areas.

Application:

  • Place two bait stations per 20 m² of floor area along the trails (not directly on the ant trail).
  • Leave the stations undisturbed for at least three months.
  • Do not use other insecticides at the same time, as this may impair the product’s effectiveness.

Conclusion

Getting rid of pharaoh ants requires patience, targeted action, and the right product. With BIOPREN Pharaoh Ant Bait, you have an effective solution at hand for permanently eliminating the infestation. Combined with thorough hygiene and regular monitoring, the problem can be resolved sustainably.


Expert knowledge: How to identify and control pharaoh ants safely

Pharaoh ants are among the most challenging ant species to control. Due to their small size, hidden nests, and colonies with multiple queens, they can spread rapidly throughout an entire building. Unsuitable sprays or uncoordinated measures can make the infestation even worse.

In the online training course “Expert Knowledge: Ants,” you will learn:

  • to reliably identify the most important ant species and correctly classify pharaoh ants,
  • to derive the appropriate control strategy from species identification,
  • to systematically inspect, assess, and document an infestation,
  • why targeted bait strategies are more effective than uncontrolled spraying,
  • to use suitable products safely and professionally,
  • to take legal requirements such as the Biocidal Products Regulation, HACCP, and the Infection Protection Act into account,
  • to prevent reinfestation through consistent prevention and follow-up care.

The training comprises ten online lessons with instructional videos, PDF materials, knowledge checks, and a final examination. The processing time is approximately 90 minutes. Upon successful completion, participants receive a certificate of participation and achievement.

Ideal for the food service industry, hotels, food businesses, care facilities, property management companies, and other users who want to identify a pharaoh ant infestation at an early stage and assess it professionally.

Book the online training course “Expert Knowledge: Ants” now and gain confidence in dealing with challenging ant infestations.

Use biocides safely. Always read the label and product information before use.

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