The massive class-action lawsuit represents tens of millions of people, anyone who ever smoked cigarettes like Marlboro Lights or Camel UltraLights, since the products were put on the market more than 30 years ago.
Otherwise several devices of a Heath Robinson nature are suggested boards to deflect the trajectory of urine and droppings, flashing lights, ultra-sound, unpleasant smells, stuffed owls, rustling aluminium foil and helium-filled balloons.