In August 2007, a group of people, among them Rainer Nõlvak, Toomas Trapido, Henri Laupmaa and Kadri Allikmäe, were sitting at a cafe table, who came up with the idea to clean Estonia of garbage in one day. Later Ahti Heinla, Tiina Urm, Tatjana Lavrova, Eva Truuverk and Anneli Ohvril joined. Let’s do it! gathered 620 volunteers and more than 500 organizations in Estonia contributed to its success at that time.

On May 3, 2007, more than 50,000 people cleaned up a total of 10,000 tons of garbage. It would have taken the state years and would have cost 22.5 million euros. But it was done in one day and cost only half a million euros (mainly the cost of waste management to the waste companies).

Today, at different times, Let’s do it! gathers almost 60 million people from more than 190 countries around the world cleaned their countries based on the model.

The first World Cleanup Day took place on September 15, 2018. It was the largest citizen initiative in the history of the world, which started and was led from Estonia. Under the leadership of Estonia, people in 158 countries around the world cleaned their land on one day.