I think it's a good question.
I will say again that I think that anything we do that eliminates plastic waste and plastic pollution will help reduce microplastics. We also should recognize that there will be microplastics going into the environment by the nature of the wear and tear in using the materials. As we drive our tires down the road, our tires break down into little bits. We sometimes find 30 pieces of tire rubber in one litre of stormwater that we collect on the road and microplastics in the dust from our textiles.
When we think about mitigation, the ways that we can reduce the microplastics going into our waterways are bioretention cells on storm drains. We see a 92% reduction in particles with those. Filters on washing machines reduce microfibres by about 90% going into the waste-water treatment plant.
There are strategies that are microplastic specific, in addition to thinking about the plastic waste strategies that also help with microplastics.