Sewage from households and industry flow directly into the sea without filtration. Combustibles from households and industry are burned either in open air at dump sites (very common) or in an incinerator. The smell of the smoke is said to be terrible. Iron, chemicals, used batteries, used motor oil and more are piled up. Boats, engines, cars, and snowmobiles are left as litter in towns. In recent years some towns have begun to collect such waste and send it to treatment facilities in Denmark, some are kept for spare parts, others were supposed to go to the dump. This is consumer generated pollution.