Recently the Lagos state government placed a ban on Styrofoam and other single-use plastic products. The ban aims to curtail the environmental menace these products constitutes in the State. Widely used throughout the State by canteens, cafeterias and other types of food sellers serving the 20- million population of the one of the most densely populated cities in the world, the ban has elicited many complaints from different quarters. The ban is the first of its kind by a government in Nigeria and has the potential to pave the way for similar prohibitions to be imposed by the federal and other state governments. This article reviews this ban and highlights key steps that will need to be taken to ensure that the ban is effective.