Bottle Fly Casters

Bottle Fly Casters (also known as green or blue bottle fly pupae) are the pupal stage of high-quality bottle flies. These nutrient-packed, soft-bodied casters hatch into active, flying adult flies in just a few days, depending on temperature, providing an irresistible live food source that stimulates natural hunting instincts.

Key Benefits:

• Perfect Size & Nutrition — Ideal for praying mantises, jumping spiders, tarantulas, juvenile geckos, tree frogs, chameleons, and other small insectivores. Green bottle casters suit smaller species, while blue bottle varieties offer slightly larger flies for bigger feeders.
• High Hatch Rate & Convenience — Freshly turned from clean, healthy maggots and supplied in secure, ventilated pots. Simply transfer a portion to a hatching container at room temperature (around 20-28°C) for reliable emergence.
• Encourages Enrichment — Live flies trigger enthusiastic chasing and feeding behaviors.
• Easy Storage — Keep unused casters refrigerated (14-20°C) to slow development and extend shelf life—perfect for maintaining a constant supply.

Usage Tips:

• For best results, place casters in a ventilated container with a damp paper towel to maintain humidity (avoid over-wetting to prevent mold).
• Hatch small batches every few days for a steady stream of fresh flies.