it will not sort your hawk problem out that easy ,if you want it to work you would have to put that mutch on one bird to do the trick that the pigeon would die of overdose ,or if you put the correct dose on each bird the same hawk would have to eat about 10 pigeons for it to do any good .it is a band product now because it does afect BOP if they eat enough birds treated with it ,this was only found out in INDIA,because they was treating the cows with it ,and the cows in INDIA are sacred and are left to die of natural causes ,so when they died the vultures fed on them and because of the high amount of ivermectin they had to use to treat the cows it was enough to kill any birds of prey that fed on them .there is a easier way to sort your hawk problem out ,it is doing the rounds ,my advice is when you get to hear about it use it and see for your self ,ATB les.[this also works on the line of flight if you use it when you are training ,and on every type of hawk .]