[Ceejache]

I think I know ONE reason behing this...Surely rubbish goes in whatever bin in the house, then when full they get emptied into a bin liner which then goes into your big bin in the back garden/yard. They then get put out on the back alley the night before collection to be collected in the morning. Following this reasoning if the householder has done this dilligently then there should be no reason for loose litter, but then you need to factor in the menace of cats! If there's any modicum of chicken, fish etc. in the bin liners they will tear 'em open overnight and rummage through them thereby depositing loose litter everywhere.

Kill 'em all I say! (Tongue in cheek...)