AvioWorm powder is an extremely safe and effective combination of Pyrantel Pamoate and Praziquantel in a special powder form. The two active ingredients combine very well to ensure maximum effectiveness against the three most common pigeon worms (Roundworm Hairworm and Tapeworm). The product is completely safe and does not cause any burn of the feathers so it may even be used during the breeding season. It has an extremely mild effect on the pigeon and will not cause any vomiting or loss of racing performance. It is supplied in a special powder that adheres easily to grain when mixed with water making it easy to medicate pigeons without having to catch them.