Frozen Mice Northern Ireland
If you're a reptile keeper in Northern Ireland or the U.K looking for a reliable, high-quality source of frozen feeder mice, rats or chicks, SiarFrozen has you covered. Based in Portstewart on the stunning Causeway Coast, we supply premium frozen mice to snake owners and reptile enthusiasts across Northern Ireland — from Belfast to Derry/Londonderry and everywhere in between.
Our frozen feeder mice, rats & chicks are flash-frozen at production, DEFRA approved, and sourced via Kiezebrink — the same supplier trusted by the world's top zoos and wildlife parks. Whether you keep a juvenile Corn Snake or a collection of adult Royal Pythons, we have the right size for every animal in your care.
Why Choose Frozen Feeders Over Live Prey?
Frozen feeders have become the gold standard for responsible reptile keeping — and for good reason. Unlike live prey, frozen mice eliminate the risk of injury to your animal during feeding, carry no live parasites, and are far more convenient to store and manage. Flash-freezing locks in the full nutritional profile of the prey at its freshest, meaning your reptile receives a biologically complete meal every time.
For keepers across Northern Ireland, frozen feeders also mean no need to source or maintain live colonies — simply order online and have your supply delivered directly to your door.
Our Frozen Mouse Size Range
We offer a comprehensive range of frozen mice to suit every stage of your reptile's development:
- Pinky Mice (2g–3g) – Ideal for hatchling snakes and very small reptiles. Shop Large Pinky Mice
- Mouse Fluffs (3g–5g) – The perfect step up from pinkies for growing juveniles. Shop Mouse Fluffs
- Mouse Crawlers (6g–9g) – Fully furred and ideal for sub-adult colubrids. Shop Mouse Crawlers
- Small Mice (10g–15g) – A staple for juvenile Royal Pythons and Corn Snakes. Shop Small Mice
- Medium Mice (16g–25g) – The most versatile size, perfect for adult colubrids. Shop Medium Mice
- Large Mice (25g–30g) – High-calorie nutrition for mature predators. Shop Large Mice
- XL Mice (30g+) – Maximum nutrition for adult snakes and birds of prey. Shop XL Mice
Not sure which size is right for your animal? Use our Frozen Rodent Size Guide or try our Feed Finder tool for a personalised recommendation.
Safe Feeding Practices
Feeding frozen prey safely is straightforward when you follow a few simple steps. Always thaw your frozen mice thoroughly before feeding — never offer prey that is still cold at the core, as this can cause digestive issues. The best method is to place the required number in a sealed bag and thaw in lukewarm water until fully defrosted, then warm to approximately 30–35°C to trigger a natural feeding response.
Always use feeding tongs rather than your hands, and wash all surfaces and equipment thoroughly after handling raw frozen feed. Store unused mice at -18°C and never refreeze prey that has already been thawed.
Packaging & Delivery Across Northern Ireland
At SiarFrozen, we understand that frozen feeders are only as good as the condition they arrive in. That's why every order is packed in industrial-grade insulated thermal packaging with professional cooling agents, ensuring your mice arrive solid and frozen — whether you're in Belfast, Derry/Londonderry, Portstewart, or a rural area across Northern Ireland.
We offer fast dispatch with next-day delivery options available across Northern Ireland and the wider UK. Our carbon-neutral courier partners handle every delivery with care, so you can order with confidence knowing your feeders will arrive in perfect condition, ready for the freezer.
Why Choose SiarFrozen?
SiarFrozen is a Northern Ireland-based frozen feeder supplier with a genuine passion for reptile keeping. Here's what sets us apart:
- ✅ DEFRA Approved Sourcing – Our supply chain meets UK government standards for ethical and legal animal sourcing.
- 🏆 Kiezebrink Certified – Sourced via Kiezebrink, the trusted supplier to the world's top zoos and wildlife parks.
- ❄️ Flash-Frozen at Production – Zero chemical preservatives. Nutrition locked in at its peak.
- 🔬 Microbiological Batch Tested – Every batch independently tested for your peace of mind.
- ♻️ Circular Food System – We repurpose high-quality materials to reduce waste and environmental impact.
- 🚚 Carbon-Neutral Delivery – Eco-friendly courier partners across Northern Ireland and the UK.
We're proud to serve the reptile keeping community across Northern Ireland, from hobbyists with a single Corn Snake to experienced collectors managing large collections.
Frequently Asked Questions
Do you deliver frozen mice to Belfast and Derry?
Yes — we deliver across all of Northern Ireland, including Belfast, Derry/Londonderry, Portstewart, Coleraine, Antrim, and beyond. All orders are shipped in insulated packaging to ensure they arrive frozen.
How should I store frozen goods when they arrive?
Transfer your frozen goods to your freezer as soon as they arrive and store at -18°C. Properly stored, frozen feeders will maintain their quality for several months.
How do I know which size mouse to buy?
A general rule of thumb is to choose prey that is roughly the same width as the widest part of your snake's body. Use our Size Guide or Feed Finder for a more precise recommendation.
Are your frozen mice safe for my reptile?
Yes. Our frozen mice are sourced from DEFRA-approved suppliers, microbiologically batch tested, and flash-frozen at production — making them a safer choice than live prey, which can carry parasites and cause injury during feeding.
Can I buy in bulk?
Absolutely. We offer a range of bulk pack sizes — from 10-packs to 25-packs — so you can stock up and save. Buying in bulk also reduces packaging waste, which is better for the environment.
Shop Frozen Mice – Delivered Across Northern Ireland
Ready to stock up? Browse our full range of premium frozen feeder mice and find the perfect size for your reptile. Fast dispatch, next-day delivery, and cold packaging you can trust — from SiarFrozen, Northern Ireland's premium frozen feeder supplier.