All councils should be required by law to collect waste bins once per week

Flies carry bacteria that is very harmful to humans, including salmonella, typhoid, gastroenteritis, E.coli, dysentery and even tuberculosis. They can also carry viruses and even parasitic worms. They transfer these to humans by landing in dirty environments such as bins, dead animals, and animal waste, and then landing on our food and food preparation surfaces, cutlery and plates on draining boards, tap handles, etc. The transfer happens within seconds of them landing on a surface.