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Symton® Black Soldier Fly

Large Black Soldier Fly Larvae

Large Black Soldier Fly Larvae

Regular price $8.00 USD
Regular price Sale price $8.00 USD
Sale Sold out
Shipping calculated at checkout.
Order Size
Large feeding-grade black soldier fly larvae are our TOP SELLER and recommended for most adult reptiles.
Length: 0.75 inches    Weight: 0.1 - 0.13 grams
Symton® black soldier fly larvae are raised on a probiotic-treated grain & grass diet, and contain high levels of calcium. Their balanced Calcium:Phosphorus ratio makes them the ideal staple diet for your reptiles, with no need for additional dusting.
We guarantee live delivery, and always include an additional 10% with your order to ensure satisfaction. The shelf-life of our grubs is at least 2 weeks if stored as instructed.

SUMMER 2026 UPDATE: Ice packs are highly recommended for delivery in areas experiencing high temperatures. Live arrival guarantee will only be honored if ice pack(s) have been added to order.

*This product is not intended to be used as medicine or occasional snack to treat Metabolic Bone Disease -- this product must be provided on a regular basis to prevent or cease development of MBD.

Choosing Small, Medium or Large BSFL

  • Small: approximately 0.25 inches (6 mm), for hatchlings and very small pets.
  • Medium: approximately 0.5 inches (13 mm), for young and small-sized reptiles.
  • Large: approximately 0.75 inches (19 mm), for most adult reptiles.

Choose by your pet's size and feeding ability. As a general guide, choose larvae no larger than the space between your pet's eyes.

Storing live black soldier fly larvae

Keep your live BSFL in the cups they come in, with the lids on, at room temperature for use within about two weeks. For longer storage, keep them at around 55°F (13°C) for up to four weeks. This is warmer than a typical household refrigerator.

See our Live Feeder Care Guide for the full instructions.

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  • 5 stars: 1295 (90%)
  • 4 stars: 49 (3%)
  • 3 stars: 65 (5%)
  • 2 stars: 9 (1%)
  • 1 star: 20 (1%)
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bradley marks (Brevard, US)
Compost colony

These are essential to organic trash disposal in my compost bins. It may be a bit early for them (because it's cold) but they know to burrow deep as they devour food scraps, vegetable waste, leftovers, cardboard, newspaper and junk mail. With the help of the earth worms I've introduced, everything turns into a black substrate that goes into the gardens.

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Shelly Rand (Little Rock, US)
Great

Our bearded dragon loves them. Crickets in the morning and BSFL at night. Very happy with the product and that they have stayed alive 3 weeks and counting

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Chana Driver (Fredericksburg, US)
Easy to feed

Hello, my dragon ate a few of them but then he spit one out. Now he won't eat any. They have turned into flies. I want to ask about dubias. I can't l do the full grown dubias but those 1/2 inch in size or smaller is what I can handle! lol

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Christine Miller (Englewood, US)
Our Beardie Thanks You

Our first order of Larvae came damaged & dead .. as soon as I informed your Co .. I received a full replacement. And very Quickly ! Thanks again !

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Anonymous (Lincoln, US)
Quality seems down of late, I don't like the medium the bsf were sent in last time

I'm a long time customer and I've always been satisfied, but unfortunately my last two shipments, spaced a month apart, were disappointing. The first shipment in January, the bsf were smaller than usual, and even though I keep them at 50 degrees in a wine fridge, they did not last the expected 4 weeks.
That's ok, I get it, its January, it happens, it was cold, etc.
However my February shipment came packed in a different medium, kind of half dirt/half the usual sawdust like material. The worms are much harder to get clean (I have a symton strainer, always worked fine before) and the worms looked less "appetizing" if that's a thing you can say about maggots. They were blackish/greyish (not their final stage, I understand they turn black as they mature), and quite a few have died already, just a week in.
The most important thing: My beardie seems less than enthused than usual with them. Maybe it's him and he's just in low power mode.
Love your product to this point, sorry to have a somewhat negative review.
I will try you again in March.

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Dean Laris (Atlanta, US)
Great Company For BSFL And Great Customer Service

The Breeder I got my baby Bearded Dragon from referred me to Symton as a supplier of BSFL for my growing boy. There was an issue with my 1st order being sent to the wrong FedEx Hub; however, when Symton was notified they corrected the issue immediately. Lindsey in Customer Service is great to work with. They will continue to get my business for as long as my Beardie has a taste for BSFL. Attached is a picture of my baby informing me his bug bowl was empty. He loves his BSFL, NOM NOM NOM!

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Lucy Maki-Fern (Bothell, US)
Longest lasting

I’ve bought BSFL from a few other sources, but they always ended up drying out and dying well before my pets finished them off. Symton’s lasted all the way until they were gone - a good two months - and lots pupated, which my pets loved. I’ll definitely keep ordering from them.
Photo attached is the primary beneficiary.

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Danielle Trockels (Clearwater, US)
Great quality feeders, fast shipping

My reptiles love them!

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Tamara Becker (South Bend, US)
Wonderful Service, Happy Reptiles!

Been using recurring order service for several years now and Symton has always delivered a great product, on time and alive! I and all the young reptiles in my care thank you!

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Kayla Webber
Bsfls

I received my bsfls and they were a lil over what I had ordered and my dragons were so much in love with these then other from an other company I had will be a return customer.

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Cristi Lawliss (Morrisonville, US)
MY GUY LOVES THEM!!

Thank you! Fast delivery- all fresh and alive!!!

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Lael Tangeman (Aurora, US)
Unbelievable!

I would normally get my dragons bugs from the big box store. My other dragon was plagued with parasites which I was told was just par for the course. I have never had an issues with poo being runny or showing any signs of parasite! Not only that, their customer services is UNBELEVABLY good! They respond quickly and fix the issues without being (for lack of better wording) cold and distant. As many customer services people are because, well let's face it, customer service suck sometimes. The 'nummers" are always alive, plump, and livey making them much more appetizing to critter who is going to enjoy them. My dragon is active, healthy and goofy. I HIGHLY recommended them! Also, these things could help feed the world and eliminate a lot of CO2 from our food waste. I'm mean it's a win win.

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Stephanie Gugel (Lexington, US)
Excellent Service

Ordered BSFL for my son's bearded dragon and he loves them. They were packed securely and arrived alive and healthy. Glad I found your website. Will definitely order again soon.

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Stephanie Hill (Kingston, US)
Billie Approved!

Took awhile to get here, but they arrived in good shape and Billie loves them!

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Alexander Kratzer (Phoenix, US)
Is this right?

I dont think my lizard or frogs liked them or I gave them dead ones I honestly don't know, because when I got them they were all black and not moving

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Snoopy R (Houston, US)
Amazing

My large black soldier fly larvae always arrive very healthy and my bearded dragon loves them!
Thank you symton for the great product!

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Kulari's Mom (Surprise, US)
Lovely Worms & even better Customer Service

I have had the worst luck getting my BSFL alive to my home. This is due to the post office not following instructions and the second time was just because it was too dang hot because of a heatwave. Let me tell you SYMTON HAS THE BEST CUSTOMER SERVICE out there! They have worked with me and my last subscription delivery was perfect. They were wiggling away when I opened the box. Myself and my BD were super excited. You cannot go wrong with the quality and the customer service. I recommend Symton in my Bearded Dragon groups for this reason. Thank you for great worms and even better customer service. They have a customer for as long as I own reptiles.

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Melissa Chamberlain (Las Vegas, US)
Great quality and cost

I have 8 chameleons, 2 skunks, and 2 hedgehogs that all LOVE your soldier fly larvae. I’ll also let some turn to flies that my chameleons go crazy for. Your soldier flies are plump, lively, and are the best cost I can find. I highly recommend you guys and appreciate the super fast shipping as well!

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Shannon Willis (North Port, US)
My dragon loved them!

The larva were packed in an easy to handle container that is labeled with what the product is and where it came from. The size and quantity were great and just what my beardie needed! You can see my little guy eating the larva on Instagram
@swillis2113. Thank you!

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Christian DeMasters (Valley Springs, US)
Spyro loves them!

So happy we found these. We inherited Spyro and my brother always fed him crickets...I 100% prefer these. Plus he eats these like nobodies business!

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Rebecca Hance (Fairfax, US)
*Chef’s kiss*

No doas, no one was even starting to pupate. Saskia sends her regards and says they are delicious!

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Kimberly Griffin (New Boston, US)
Wonderful!

The BSFL I received are large and fat, my little beardie is in heaven!! Thank you for a quick shipment, I am thankful to find a supplier in Texas! I will be a repeat customer!