A recent survey of 12,000 parents in 10 countries, conducted by detergent brands OMO and Persil, found that one-third of kids between the ages of five and 12, spend less than 30 minutes outside each day.

To make a point, the detergent brand Persil shot a documentary style film inside Indiana’s Wabash Maximum Security Prison as part of its “Dirt Is Good” themed campaign, presenting the concerning fact that US prisoners get more time outside than the average child in a rather abstract way.

The ‘Free the Kids’ campaign is brought to you by Dirt is Good, an initiative to get kids spending more time outside. Find out about the benefits of outdoor play for kids here: dirtisgood.com.