These UK native, microscopic worms feed and multiply inside the slug. The infected slugs tend to hide underground where they stop feeding and die. Supplied as an easy-to-mix powder to be diluted with water before use. Apply to moist compost/soil, when the soil temp is above 5ºC using a watering can or sprayer.

Use treatment between March and October. A second application may be advisable 6-8 weeks later.