Excis is indicated for the treatment and control of sealice in farmed Atlantic Salmon (Salmo salar).

Excis will treat and control all stages of Lepeophtheirus salmonis (copepodid, chalimus I – IV, pre-adult and adult) and Caligus elongatus.

Treatment of sea lice at the chalimus IV stage (ie before they mature into gravid females) should help to reduce the number of infective stages released near the fish cages, and is recommended.