It is against the law in Hong Kong.
The government gazetted amendments to the Wildlife Protection Ordinance on August 1 to extend feeding bans to cover wild pigeons and introduce a HK$5,000 fixed penalty system
Had one that worked for only a week. It was good, but after it stopped working, which I did not know, it lulled me into a false sense of security and it was only when I got attacked I realised it was kaput.