ProtoxHysan is composed in such a way that when the liquid comes into contact with the acid molds, the chlorine dioxide is released (this is called "in situ generation").
In normal attacks, it is not necessary to add activator.
In case of massive infestations or in connection with disinfection (e.g. after rising sewage), activator must be used. This is a task for professionals who have completed the necessary courses.