Flubenvet

Flubenvet is a natural wormer for internal parasites in the chicken.Worms live in the intestines and respiratory airways of the chicken, it is more likely to get worms in a free range environment because the bare earth.Worms can be found in earth worms, insects and wild birds and can be carried easily by pets and equipment. I recommend Flubenvet for small numbers of domestic fowl. There is no withdrawal period for the eggs unlike most pesticides which means happy hens and happy keepers. Flubenvet say to prevent worms:

• Always feed from feeders rather on the direct on the ground
• If possible, move your poultry to clean grass on a regular basis
• Avoid muddy area, put down pea shingle in strategic areas to clean feet and allow droppings to dry
• Keep grass short to expose worm eggs to sunlight which destroys them

Worm every season with Flubenvets' worming products I believe you can get it from vets or agricultural shops without prescription but correct me if I'm wrong!