Last year, China announced that it is officially done accepting “foreign garbage.” That is: plastic and paper recycling scraps from the U.S. and Europe. Since March 1, the country has barred 24 materials, including plastic and paper, from entering its borders. The few items the nation will take, like scrap metal, have to be super clean (to be precise, no more than .5 percent impure).

That’s a big deal to the U.S., which, in 2016, sent 16 million tons of waste to China. Under these new rules, most of that won’t be accepted. So what will we do with all those shredded bottles and newspapers?

Some states have already started chucking recyclables into landfills, but there are other options.

One: we could stockpile the scraps until we have enough processing facilities in the U.S. to handle them. Since we’ve been dependent on China’s open arms for so long, we haven’t invested in mills big enough to process all those paper scraps in the U.S., Ben Harvey, the president of waste management company E. L. Harvey and Sons, told USA Today. It will take five to six years to build plants that can handle everything that had previously been outsourced. In the meantime, we have to be careful about where we put scrap stacks. California’s recycling policy director, Zoe Heller, told the New York Times that paper stashed in the wrong spot could be tinder for wildfires.

If we don’t want to sit on our own waste, recycling companies could reroute their ships that haul the recyclables to other nations. Last year, Thailand, Vietnam, Malaysia, and Taiwan increased the amount of plastic scrap they accept, while India and Mexico welcomed more cardboard and paper scraps. Even so, China took half of the world’s plastic, paper, and metals in 2016. If other nations are going to compensate for all that China rejects, they’ll have to take in a whole lot more waste.

The last and most effective way to deal with the crushing stockpile of bottles, caps and cans? Stop using so many in the first place. Legal measures, like California’s ban on single-use plastic bags, reduce the amount of plastic that can be discarded. In 2016, the state banned single-use plastic bags (it used to hand out 13 billion plastic bags a year), and that’s had a direct, noticeable impact on how much is wasted: the 2017 Coastal Cleanup Day picked up less than half as many bags than their 2010 effort did, according to the LA Times. It’s not yet clear whether measures like this will take off elsewhere — New York City only recently revived the idea of a ban like California’s, and who knows what will happen with the bill meant to ban plastic straws in all five boroughs.

No matter how we solve the problem, it has to be taken care of soon — preferably not by begging China to reverse the policy and let their environment go to ruin.