A wildlife safari in Oregon has come up with an innovative way to raise money in a tough economic climate.

For a $20 donation, visitors can have their car washed by the elephants, who suck water into their long, slender trunks before showering it upon waiting vehicles. After the initial rinse, the animals grab a sponge in their snouts and scrub the windows.

Zoo officials claim that the elephants don’t mind the work, and that the fundraiser has been a hit.

Watch the video here.