We’re all becoming more aware about the damage single-use plastics and fast fashion has on the environment. Yet there is one product we all throw away every single day that, so far, has not been a major part of conversations about sustainability: toilet paper.

But America’s heavy use of toilet paper – particularly the pillowy soft kind – is worsening climate change and taking “a dramatic and irreversible toll” on forests, especially the Canadian boreal forest, according to a new report by two major environmental groups, the Natural Resources Defense Council (NRDC) and Stand.earth.

The boreal forest covers almost 60% of Canada and is home to 600 indigenous communities. Its huge size means it can absorb large amounts of carbon dioxide from the atmosphere, the equivalent to the annual emissions of 24m cars each year.

The report found that major brands’ refusal to switch to sustainable materials in toilet paper is having a devastating impact on forests and climate. About 28m acres of Canadian boreal forest have been cut down since 1996, an area the size of Pennsylvania. Virgin pulp, the key ingredient in toilet paper, accounted for 23% of Canada’s forest product exports.