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Symton® Black Soldier Fly

Heat Packs

Heat Packs

$3.00 USD
$3.00 USD
Sale Sold out
Shipping calculated at checkout.
Size

UniHeat heat packs are designed for reliable and steady heat release for hours! Provides an average warmer surface temperature of 100°F (38°C). These are highly recommended for delivery in areas experiencing temperatures below freezing 32°F (0°C). We do not recommend adding heat packs to your order if temperatures in your area are above 40°F (4.4°C).

Our SMALL size delivers 40+ hours of heat, and our LARGE size delivers 72+ hours of heat. 


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  • 5 stars: 10 (59%)
  • 4 stars: 2 (12%)
  • 3 stars: 1 (6%)
  • 2 stars: 1 (6%)
  • 1 star: 3 (18%)
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Hollis Dow (Chicago, US)
All arrived alive

It’s below freezing here in Downeast Coastal Maine and they showed up on time and all alive.

D
Debra Brimacombe (Forest Grove, US)
The small BSF larvae arrived in great condition

I’m not sure what the weather was like in all of the areas the larvae had to travel through, but they did arrive in great condition. The Heat Pack was solid on arrival. Better safe than sorry. I don’t have an experience to rate it otherwise.

B
Brendon Sunada (Honolulu, US)
Delivered to Hawaii with no problem

Ordered medium and small BSF larva during the great freeze of 2026. I figured that my order would be postponed until the areas warmed. I was wrong. Order dispatched quickly with Heat packs. I am aware that I live in HI and that my temps are fine, but I was concerned about the areas that the package might have traveled through. It arrived late (not Symton's fault, USPS) but larvae were fine. Did I need the heat packs? I don't know, but it is cheap insurance to get my order to me.

L
Lori N Leech (Naaldwijk, NL)
Winter Order

Heat packs were cold by the time I received the package, which was probably due to delivery time being longer than expected. The cold and dried food were probably the main factors of half of the silkworms being dead. I am not surprised/upset though; I knew when I ordered live animals from Texas to NC during some winter weather that this might be the case.

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Nicci Deckard (Brandenburg, US)

Heat Packs

R
Ryan Sepaniak (Easton, US)
Very Happy

Black soldier fly grubs arrived healthy, alive and active. They've been doing really well the last 10 days and are growing really fast.

C
Christina Lincoln (Dexter, US)
Will buy again!

BSFL came in and almost all of them were alive! And we love the no escape bowls!

K
Kevin Hopes (Youngstown, US)
Some turned black 2 days after

My bearded dragon loves this thank God ive tried what so many dragons I had over the last years with bsfl no luck . But what my selene she loves them .Only thing is the started to go black second day i had them

S
Scott Attea (New York, US)
Bad Time to Order

It's January. I live in NY. It's so cold out that by the time the package arrives, the heat pack is ice. The first order was all dead larva and roaches. Their customer service is incredible and sent a second shipment immediately! The larva arrived dead and only a few roaches were alive. I dont blame them, I blame mother nature.

S
Sylvia Wray (Webster, US)
Dead BSFL

Even with the heat packs unfortunately my BSFL didn't make it. Just don't think they are good for cold weather

J
Jamie Jamie (North Las Vegas, US)
Always amazing

Everything arrived alive and wiggling even in the Vegas heat!

J
John Kratman (Lincoln, US)
Absolutely, the best place around

My shipment got lost in the crazy weather and it was no problem. As soon as it was apparent my stuff was not arriving in a timely manner, Symton came through with a new shipment. Thanks!

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Linda Beasley (Stayton, US)
HEAT PACKS

My worms were in shipping warehouse Sat.,Sun., and Monday.
Plus in transit so by the time I received them they were dead and HEAT PACK not even a bit warm😳

A
Alicia Buckingham (Scottsville, US)
Heat packs are helpful

When its cold I am thankful that heat packs are offered to keep the best bsfl healthy and safe during shipping. Symton has the absolute best bsfl!

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Nichol Martinez (Oklahoma City, US)

They got to me safe, sound, and ALIVE 🙂

A
Aaron Holan (Toledo, US)
My review on Symton BSFL

When I got my BSFL they all were alive and so healthy and my reptiles absolutely love their BSFL thanks Symton BSFL for your business I’ll be ordering again when I need more ! I highly recommend them if your looking for BSFL for your reptiles

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Travis Watts (Friendsville, US)
Just a little insurance

BSFL are pretty tough, but for just a few bucks it was worth the peace of mind, and I am sure the larvae appreciate not freezing on some level.

Let customers speak for us

from 4024 reviews
Excellent quality, fast shipping

Has lasted my baby bearded dragon over 20 days now; these are his staple, supplemented with other insects and veggies. He has been growing an inch a week and gaining 6-10 grams a week.
He eats these things like dragon popcorn. Happily snaps them up. Fully recommended.

Holly L.
Medium Black Soldier Fly Larvae
Awesome!

My breaded dragon LOVES this BSF feed! We've tried others and have not had the same response from our baby. Our dragon is growing so fast since we started! Happy dragon makes a happy life!

Alexia Imori
Medium Black Soldier Fly Larvae
Good quality for the price

Great feeder insect for the price. About 500 for ~20 including shipping, feeds our juvenile bearded dragon for a a few weeks mixing it up with other feeders. Hint: Order the sifter and scooper accessory with your *first* order, it really helps out a lot.

Ash Patil
Medium Black Soldier Fly Larvae
Great customer service

My first order came and they were all dead due to weather issues but with just a few days I got another order completely free of charge and with great communication and support. Love the bugs

Clairmont Robertsoncs
Large Black Soldier Fly Larvae
Awesome service!

These folks went way above and beyond to get my order of BSFL to me. They guarantee their shipments and stand behind that guarantee! I am extremely happy with their level of service, and my dragon is extremely happy with their product.

Keely Lewis
Large Black Soldier Fly Larvae

quick shipping, incredible quality. my beardie is obsessed! delivered to florida in the heat of the summer, not a single dead larvae! just ordered for a second time and set up a subscription 😊

Baxley Williams
Large Black Soldier Fly Larvae
Great company

After no fault of the company my packages arrived busted, and most the BSFL squashed or MIA due to the delivery driver. Symton was quick to respond to my email and sent me more to make it right!

Heather Hickman
Medium Black Soldier Fly Larvae
Awesome.👍

Got my shipment today they were all alive and very good size. Healthy active bsfl.symton you are the best .thank you

Gisella L Mugno
Symton® Black Soldier Fly
AMAZING

All alive, great size and my beardies LOVE them! Thank you!

Cheyenne Lamontagne
Large Black Soldier Fly Larvae
Very useful

Product works very well as described. now if only had a way to dry them before putting them into my no escape dish..

Derek
Symple Scooper
What Can I Say!!!

What can i say??? My beardies love them, even with a full belly they wont refuse!!!. No such thing as a picky eater when is comes to Symton™ Black Soldier Fly Larvae. Don't listen to my review, see it for yourself you wont be disappointed. Oh and did i forget to mention the customer service, OUTSTANDING!!!. I know where i will be spending my money.Symton™ Black Soldier Fly!!!

EMMANUEL CELESTINO
Large Black Soldier Fly Larvae
Amazing Product, Amazing Company

Living in Florida it's often difficult to get insects mailed here in the summer months and expect them to be alive. Symton truly stands behind their guarantee and replaces anything that didn't live thru the summer heat. The product is always nicely packed, clean and my bearded dragon LOVES them (he eats 1000 per week)

Michael Jacobson
Very happy new customer :)

Just got my super fast 1st shipment of 500 large BSFL & I couldn't be more pleased. They were fat & active which had my veiled chameleon & bearded dragon gobbling them up! There were no dead ones that I saw & the price is a great deal. These were WAY better than I've gotten from other sellers by a long shot. You just have to see them to appreciate what you're getting. I'm gonna see how long these last & then get a regular delivery set up. So glad I happened to hear about this company. I'll be spreading the word!

Amanda W. (Central FL)
Customer for life.

Ive been ordering from Symton for months now, with an order every week to every 2 weeks. Its heating up now and making it harder to ship these feeders out. I received my order of 1200 bsfl, and unfortunately they were all dead from the heat. I contacted Symton via email, and they immediately shipped out another same day. I got my order fast as always and they were alive. The fact that a company cares about their customers like this goes a long way for me. It wasnt their fault, (temps are different throughout the country) I know this, i didnt gripe, or complain. All i did was let them know, they didnt require me to send them pictures or any questions. They just shipped out another order for me. These guys are great, and their quality of BSFL is spot on. Its my beardie's main staple (with a variety of supers and hornworms) with the exception since he gets tired of them quickly lol. But i know their the best feeder for him so ol' Yondu will have to get over it.
Keep up the great work Symton!!

Matthew Lockwood
Best Black Soldier Fly Larvae around

My order was received in a timely matter as promised. The BSFL were loved and very much enjoyed by all my reptiles. I would highly recommend them.
Will definitely be ordering again in the near future.

Barbara Vrablic