Each day residents of Lagos, Nigeria - the largest city in Africa with a population of over 20 million - produce 14,000 tons of waste. Only 40% of the waste is formally collected. What's not scavenged and sold to middle men ends up in gutters, channels and finally, the ocean. In a few neighborhoods of Lagos, an innovative social enterprise called Wecyclers is working on changing people's mindsets about waste management. They encourage residents to collect recyclables - plastic, paper and cans - for which they accumulate points redeemable for household items or cash. Collected materials are sorted at Wecyclers' facilities and sold to recycling companies. Currently, Wecyclers provides employment to approximately 200 mostly young men and women and processes about 3 tons of waste per day. It might not be much in this mega city of millions, but it's nevertheless significant for people participating in the program. In addition to earning money from waste they used to throw away, residents benefit from cleaner environment - gutters that are not blocked by trash are less likely to be breeding ground for mosquitoes.