The UK’s own farm-fresh subscription for live BSFL. 37× more calcium than mealworms. Dispatched alive from Yoxall, Staffordshire.
Insect frass fertiliser from our British BSF farm. NPK 3-1-2, chitin-active, microbially alive. The slow-release organic feed your garden needs.
Live black soldier fly larvae with 37× more calcium than mealworms. Stronger eggshells, glossier feathers, hens that run when they hear the tube rattle.
Insect frass fertiliser, NPK 3-1-2, slow release. Chitin-active, microbially alive. The organic soil boost your allotment has been waiting for.
Live Calci Worms are raised on UK surplus food. The frass they produce becomes Flytiliser. One British farm, zero waste, two harvests — the definition of a circular economy.
Read our sustainability story →My hens go absolutely wild for these. I've tried other brands but the Syntects tubes are so much easier to use — just pour and watch them go crazy. Eggshells have visibly improved too.
Brilliant service and the worms arrive lively every time. The subscription is so convenient — just shows up when I need it. Brilliant to know they're actually farmed in the UK and not imported.
Used the Flytiliser on my raised beds this spring and the difference is remarkable. My tomatoes have never looked this healthy. Great to support a local UK farm rather than buying something imported.
Live Calci Worms — the common name for live black soldier fly larvae (BSFL) — are the finest natural treat for backyard chickens in the UK. Unlike dried mealworms, which are illegal to feed to poultry under UK regulations, live Calci Worms are DEFRA compliant and safe to feed daily.
The nutritional case is clear: live BSFL deliver approximately 37 times more calcium than mealworms. For laying hens, that calcium directly strengthens eggshells, reduces soft-shell eggs, and supports healthy bone development across your whole flock.
At Syntects, every Calci Worm is raised on our own farm in Yoxall, Staffordshire — never imported. Subscribe for weekly, fortnightly or monthly deliveries from £10 per week, or try a one-time tube for £14. Pause or cancel anytime.
Flytiliser is our brand of insect frass fertiliser, produced as a natural by-product of our black soldier fly farm. It delivers NPK 3-1-2 with slow-release nutrients that feed soil over weeks — not the short spike you get from synthetic fertilisers.
The key differentiator is chitin — a natural biopolymer found in insect exoskeletons. Applied to soil, chitin stimulates plants' natural immune responses, encouraging beneficial fungi and bacteria, and producing more disease-resistant, healthier crops. 100% organic, zero synthetic inputs.
Ideal for allotments, raised beds, kitchen gardens and containers. Each 500g bag treats approximately 5–10m². Buy Flytiliser insect frass fertiliser direct from our Staffordshire farm from £8.50.
