your right there john i had a young saluki/greyhound bitch last season that i had to get rid off the things was bonkers did not listen to anything when out in the field but fine at home ,it killed every rabbit i put it on from about 8 months but id be chasing the c*nt around for around half hour every run it had,everything i tried never worked,then the f**cking things started grabbing sheep so it had to go,was a lovely dog tho