anyone use this one: http://www.foxcalluk.co.uk/index.php
my guess is your blowing it to hard and to loud if there running away from you try starting off soft and working the noise level up until you get some interestnot called a thing with mine yet ! when they ran away from me calling with it i shouted our local HUNTSMANS name DAN that stopped em, BANG .had a few like that now lol