Puss now seems to be doing his busines outside!! Just gone to sift litter tray and it's untouched. Last sifted last night and it's still smooth with no paw prints in it.
He's 6 months old and I thought I would be forever poopa scooping. DH is pretty sure he saw him doing something at the top of the garden a few days ago and I'd noticed that the tray was not as 'full' as usual - what a little gent he is!! I thought we'd have to train him to do it outside in the summer, clever cat. Have now forgiven him for curling up next to DSs head on his clean sheets!