Palestinians install manure bags on working donkeys and horses in Deir El Balah in central Gaza Strip, as part of an initiative, on the occasion of World Environment Day, to keep the streets and environment clean. "The name of the initiative is 'horse with manners'. The aim is to have a clean environment free from animals manure," says one of the initiative coordinators which is carried out by a team of Gazan girls. IMAGES AND SOUNDBITES