Harkanker Liquid is designed to prevent a build-up and spread of canker in adult racing and exhibition pigeons. Harkanker Liquid should be given at the beginning and the end of the racing season, or when signs of infection are apparent. By medicating the drinking water with Harkanker Liquid for one week in every four, outbreaks of canker are prevented. Contains ronidazole 1.2% w/v.
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