API-BIOXAL: a reference solution against Varroa destructor
Cécile de Produits-Veto
Pharmacy technician ·

The API-BIOXAL varroa treatment is today an essential solution for controlling infestation in bee colonies. Its new sugar-free formula improves ease of use while retaining recognized efficacy against Varroa destructor, a major parasite responsible for significant winter losses.
Available in 31 g, 156 g and 350 g formats, API-BIOXAL easily adapts to the needs of both amateur and professional beekeepers. It is mainly used during broodless periods or as a complementary treatment depending on the hive's health strategy.
Why is the API-BIOXAL treatment essential for bees?
A major parasite responsible for winter losses
Varroa remains today the leading cause of colony mortality in Europe. This parasite weakens bees by feeding on their hemolymph. It also transmits several dangerous viruses.
Without proper treatment:
- the colony gradually weakens
- production decreases
- winter bees survive for a shorter time
- the risk of collapse increases
Thus, including API-BIOXAL sans sucre in a health protocol helps effectively limit parasitic pressure.
Symptoms of a varroa infestation
Certain signs should prompt quick action:
- significant natural varroa drop
- bees with deformed wings
- irregular brood
- declining population
- decreased honey production
A quick intervention greatly improves the colony's chances of survival.
How to use API-BIOXAL sans sucre in the apiary?
API-BIOXAL contains oxalic acid, a molecule known for its efficacy against Varroa destructor. Its action relies on direct contact with parasites present on adult bees.
The new sugar-free formula makes it easier to use with several application methods.
Two main techniques exist:
1. Trickling
This method involves diluting the powder in a suitable solution and then applying it directly between occupied frames.
Advantages
- simple implementation
- dosage precision
- ideal when there is no brood
2. Sublimation
This technique disperses oxalic acid as vapor inside the hive.
Advantages
- excellent diffusion
- quick intervention
- minimal disturbance to the colony
However, it requires specific suitable equipment.
API-BIOXAL formats 31 g, 156 g and 350 g: which one to choose?
The availability of several packaging sizes allows the treatment to be adapted to the size of the apiary.
Api-Bioxal Format 31 g
Recommended for:
- small apiaries
- amateur beekeepers
- one-off winter treatment
Api-Bioxal Format 156 g
Suitable for:
- medium-sized apiaries
- planned seasonal treatments
- regular beekeepers
Api-Bioxal Format 350 g
Ideal for:
- professional operations
- large apiaries
- annual health strategy

Recommended veterinary solutions against Varroa destructor
An effective strategy always relies on a combined approach.
API-BIOXAL is ideally used:
- as a winter treatment without brood
- in rotation with other treatments
- as a complement to annual health plans
Its use helps:
- reduce parasitic pressure
- improve winter survival
- support the colony's vitality
- limit viral transmission
Frequently asked questions about API-BIOXAL Varroa
When to use API-BIOXAL against varroa?
API-BIOXAL is mainly used during broodless periods, often in winter. This period ensures maximum efficacy because varroas are then found on adult bees. It can also be used as part of a rotation strategy with other treatments depending on the apiary's health plan.
Is API-BIOXAL sans sucre just as effective?
Yes. The new sugar-free formula retains the same efficacy against Varroa destructor. It mainly offers better adaptability depending on the application methods used by the beekeeper, particularly for sublimation.
How many hives can one API-BIOXAL sachet treat?
The number of hives treated depends on the method chosen. The 31 g format is generally suitable for a small amateur apiary. The 156 g and 350 g formats allow a larger number of colonies to be treated in a professional setting.
To learn more about Api-Bioxal
- Find all our products against Varroa Destructor
- Learn more about our Bee veterinary products
- Read our article on VarroMed
- Find out more about Api-Bioxal with Veto-pharma






