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After 30 days, the research team found the mealworms ate about half the microplastics available, about 150 particles per insect, and gained weight.

Mazac, a sustainability researcher at the Stockholm Resilience Centre, is among the scientists that have attempted to quantify the carbon footprint of producing things like crickets, mealworms and black soldier flies on an industrial scale.

She put on throwaway gloves, then cleaned my potty corner, changed my bedding, gave me fresh water and finally—oh, joy!—gave me fresh grain, some lettuce and mealworms.

Tan hopes that the mealworms, tiny balls of suet and sunflower chips she leaves on the patio will ensure more fledglings reach adulthood.

Dried crickets received formal approval for use in adult dog food in January, and mealworms received tentative approval the same month.