Bees in danger: The scourge of varroa

For several years, bees have been facing an alarming decline in their populations. Among the main causes, we find the Varroa destructor parasite, a mite that severely affects the health of colonies. In this article, we will explore the impact of Varroa on bees and possible solutions to combat this scourge.

Varroa: A formidable parasite

Varroa is a mite native to Asia that has spread worldwide over the past few decades. It attacks adult bees and larvae, feeding on their hemolymph (insect blood). This parasite weakens bees, making them more susceptible to diseases and viruses.

Consequences of Varroa on bee colonies

Weakening of bees: Varroa feeds on the hemolymph (blood) of bees, individually weakening infected bees. This can lead to a decrease in the longevity and vigor of adult bees, thus affecting the overall strength of the colony.

Transmission of viruses: Varroa acts as a vector for several viruses harmful to bees, such as acute paralysis virus, chronic paralysis virus, and others. Varroa infection can increase the virulence of these viruses and spread them rapidly within the colony.

Deterioration of overall colony health: With a high parasitic load of Varroa, bee colonies can become more susceptible to other stresses, such as pesticides, poor nutrition, or environmental stress, leading to a rapid decline in colony health.

Decrease in bee population: Varroas reproduce in brood cells, where they parasitize larvae. This can lead to a significant decrease in the number of emerging young bees, reducing the overall population of the colony.

Decrease in honey production: By weakening bees and reducing the colony's population, Varroa can diminish the colony's ability to collect nectar and produce honey.

Colony migration: Bee colonies severely affected by Varroa may become unable to sustain a viable population and eventually collapse. This can lead to the abandonment of the hive by surviving bees, resulting in economic loss for beekeepers and a decrease in pollination in surrounding areas.

Combatting Varroa: Possible Solutions

Chemical Treatments

Chemical treatments are widely used to combat Varroa, dividing into two main categories: synthetic acaricides and natural acaricides. Synthetic acaricides, such as impregnated strips or diluted solutions, are known for their effectiveness and availability in various forms. Their application must strictly follow the manufacturer's instructions to ensure safe and effective use. On the other hand, natural acaricides, such as those based on essential oils, formic acid, or oxalic acid, offer a less toxic alternative for bees. However, their effectiveness may be lower and vary depending on the case. It is therefore important to choose the treatment best suited to the specific needs of the hive, considering both its effectiveness and its impact on bee health.

Biological Treatments

Biological treatments offer an alternative approach to control Varroa in bee colonies. One method involves using biological control by introducing predatory mites such as Typhlodromus pyri into colonies to naturally reduce the parasite population. Another biological technique is the implementation of pheromone confusion techniques, where pheromone dispensers are used to disrupt Varroa reproduction. These methods aim to reduce the impact of the parasite on bee colonies while minimizing the use of potentially harmful chemicals.

Stop Varroa Treatment

The Stop Varroa Treatment is organic and easy to use. It guarantees a success rate of 100%. Simply lift the frames one by one, then spray both sides with the treatment. The Varroa colony will be completely destroyed within 24 hours.


Varroa is a formidable parasite that poses a significant threat to bees. It is important to implement measures to combat this scourge in order to protect bee colonies and ensure plant pollination.