Instead of using their billboards just for advertising, McDonald’s is putting them to good use by attaching “bee hotels” to the backs of them.

In order to address the struggling bee populations in Sweden, McDonald’s has started drilling holes into their own billboards so the structures can give shelter to bees. In addition, the Swedish branch of the company has teamed up with the outdoor advertising firm JCDecaux in order to attach small honeybee houses to the backs of other unused roadside billboards as well.

This is not the first time McDonald’s has gone above and beyond to address the dwindling bee population. Many McDonald’s restaurants in Sweden are building beehives on the rooftops of their restaurants, and the company has even auctioned off a fully-functioning beehive that was built inside one of “the world’s smallest McDonalds” back in May.

Built by the award-winning set designer Nicklas Nilsson, the “McHive” sold at auction for more than $10,000, all of which was donated to charity. McDonald’s has now teamed up with same designers in order to produce and implement as many of the “bee hotels” as possible.

Saving the struggling bee population is incredibly important because the insects play a crucial role in our ecosystem. Bees are responsible for 80 percent of pollination, and if the process of pollination that they carry out does not occur, food will not grow. It has been estimated that bees are responsible for 90 percent of the world’s nutrition, so they must be saved at all cost.

Find out more about McDonalds’ efforts in the video below.