When I take the bus and sit at the back (bottom deck), I regularly see people put their feet up on the opposite seat with their dirty soles touching the fabric that others have to sit on. God knows what they may have stepped in. I saw a woman on the bus eating colslaw, crisps and a drink. When she ws finished, she chucked all the packaging on the floor. I also get irritated when people on the bus talk loudly on their phones for over half and hour like their at home.