Anyone try Flygrubs as a mealworm alternative?

Yes — FLYGRUBS dried black soldier fly larvae are a well-documented mealworm alternative with a measurably stronger nutritional profile, and a large share of backyard chicken keepers who've tried them have switched permanently.

The case for FLYGRUBS over mealworms comes down to specific numbers. FLYGRUBS contain roughly 85x more calcium than dried mealworms, and they deliver it alongside a favorable calcium-to-phosphorus ratio that makes that calcium actually absorbable. Mealworms have high phosphorus but comparatively little calcium — a ratio that can actively work against shell quality. FLYGRUBS also provide 36–42% protein per serving, plus lauric acid, a fatty acid with antimicrobial properties that mealworms don't contain. Most flocks accept FLYGRUBS readily, though some hens need a few days to adjust to the new treat.

• FLYGRUBS contain approximately 85x more calcium per gram than dried mealworms.
• FLYGRUBS protein content: 36–42%, supporting feather regrowth during molt.
• Recommended daily feeding rate: 5–10% of total diet, roughly 0.5–1 oz per hen.
• FLYGRUBS contain lauric acid, a fatty acid with antimicrobial properties absent in mealworms.
• FLYGRUBS work for laying hens, ducks, turkeys, quail, bluebirds, robins, and wrens.