Ctgb policy on pheromones and attractants

The Ctgb has enacted a policy for biocidal products and plant protection products that contain pheromones or attractants, and has clarified when an authorisation is required for such products. This policy is compatible with the European guidances and other European agreements on these products.

Semiochemicals are substances that are emitted by plants, animals and other organisms to communicate (send chemical messages). These substances can have various effects, such as attracting or repelling other organisms, or disrupting their behaviour. Various plant protection products contain these substances. Depending on their purpose, they may require an authorisation as a plant protection product. Regarding the development, authorisation and use of plant protection products based on semiochemicals (including pheromones), in May 2016 a European guidance was approved: ‘Semiochemical active substances and plant protection products’. In response to these developments, the Ctgb has clarified the policy in the Netherlands for products based on semiochemicals and attractants.

Requirement for authorisation depends on the purpose of the product

According to the Plant Protection Products Regulation, no authorisation is required for products containing attractants as long as they do not contain any other chemical active substance. In plant protection, an attractant is not considered to be an active substance.

Primary function of semiochemical or attractant in the product

Additional function

Plant protection
(according to the Plant Protection Product Regulation, PPPR)



No authorisation required*  (monitoring only)

Mechanical control

No authorisation required*

Insecticide or other type of active substance

PPPR authorisation required (a semiochemical or attractant is not an active substance)

Disrupt behaviour


PPPR authorisation required (a semiochemical is an active substance)



PPPR authorisation required (a semiochemical is an active substance)

* according to the Guidance on Semiochemicals