Stops birds from feather pecking which can occur for many reasons from boredom to strain of bird nettex anti pecking spray works 2 fold firstly by preventing biting or plucking by way of a foul taste with a very strong odour secondly anti bacterial agents have been added to help soothe and repair minor skin abrasions and it will also disinfect the afflicted sites the foul tasting substance is so strong most biting or plucking will cease after 1 or 2 days