Aristopet Poultry Wormer treats hairworm, caecal worm and roundworm in chickens, duck, geese, turkeys and other food producing birds. Worm infestation can cause diarrhoea, reduction in egg production and weight loss. This worming product is easy to use by simply adding the recommended dose to the birds water. Aristopet Poultry Wormer is an effective way to treat common bird worms, helping protect your poultry against diarrhoea, reduced egg production, and weight loss. It’s formulated to be convenient, easy to use, and safe.