Dirty garbage cans breed bacteria that can cause several diseases.
The cans become a perfect breeding ground for bad bacteria if not cleaned regularly.These bacteria can cause diseases such as typhoid fever, cholera, gastrointestinal and malaria skin diseases

Toxicity to pets.
Cyanobacteria (also known as blue-green algae) are microscopic bacteria produced from waste material; Sanitation provides mitigation for the contamination of local ponds, freshwater lakes, streams, and brackish water ecosystems. Toxins (such as microcystins and anatoxins) affect people, livestock and pets that swim in and drink from the algae-contaminated water.

Attracts Vermin and Insects.
Dirt and foul stench attracts vermin and insects. We commonly encounter rats, flies and cockroaches around dirty and smelly garbage cans.
They pose a great risk in spreading diseases.

Causes Water Contamination.
Toxic substances and chemicals washed down in a watercourse can easily pollute water on a surface level.
Water pollution affects an entire ecosystem.