Discarded cigarette butts are visible everywhere in urban areas, and along roadsides and in parks in rural areas as well. Even if you carefully discard cigarette butts into trash that heads to a landfill, they or their eventual residue persist and continue to be biologically toxic for at least a decade.
phys.org
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What happens to cigarette butts after 10 years in the environment
Cigarette butts are the most common form of litter worldwide. Trillions are discarded every year in cities, parks, beaches, along railway tracks and roadside environments. Despite their small size, these remnants of smoked cigarettes represent a persistent form of pollution because their filters...
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