Description Long-lasting activity CBM8 MV® is microencapsulated so that the 2 active ingredients are paid-out over a number of weeks. – Dual active ingredients CBM8 MV® contains Type 1 and Type 2 pyrethroids. These compounds affect the insect’s nervous system in different ways with Type inducing T Syndrome, Type 2 inducing CS syndrome. This means that CBM8 MV® can be suitable for flocks with existing resistance to pyrethroids.