i went to farmers industries picked up battery fence thats runs on 6 d batterys enough to stop cats but not hurt children because i live on a council estate ran the wire around the top off the fence cost me £60 WITH WIRE BATTERYS LAST ABOUT 3TO4 MONTHS NEVER HAD A PROBLEM SINCE well worth the money just an idea mate yours in sport shalis lofts
p.s all i hear now is meowwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww in the night ;D