f**k the neighbours mate and the collar get the pup a big roast bone to chew on when you go out start off with going away for 5 mins then 10 ect.. as the lads have said about the collar its not good at that age :realmad: all the pup will associate with you leaving it is pain... leave 1 dog at home for a week or two let her/him settle in and go from there...
atb