Active Ingredient: Fluralaner 10g/L Flexolt contains the novel active for sheep lice control, fluralaner, which works systemically via oral administration. Simple and effective lice control starts from the inside. Effective lice control is no longer linked to shearing. Flexolt is effective for unshorn lambs (lambs from 6kg body weight), short wool, long wool, off-shears and up to 7 days off-shears. Flexolt lets you choose when it suits you to treat for lice and allows you to adapt to common challenges to simplify lice control.