Buying Superworms Online: How to Get Healthy Feeders That Last

Buying live feeders online used to make me nervous — would they arrive alive, would they be the right size, would they last? After ordering a lot of superworms, I can tell you the process is reliable when you know what to look for, and superworms are one of the most forgiving feeders to ship and store. They don't need refrigeration, they're tough, and they keep for weeks. Here's how I buy them, what separates a good batch from a bad one, and how to keep them healthy once they arrive.

What superworms are

Superworms are Zophobas morio, the larvae of a large darkling beetle — not worms, and not just oversized mealworms. They're a different species with different needs. Larvae run 1.5-2 inches at feeding size, they're active and wriggly (which triggers feeding responses in reptiles, birds, and exotic mammals), and they pack high protein and high fat into a soft-ish body with a hard head capsule. That nutrient density makes them an excellent rotation feeder for bearded dragons, larger geckos, turtles, monitors, birds, hedgehogs, and sugar gliders.

The honest nutrition picture

Two things to be clear-eyed about:

1. ◆They're fatty. Superworms are protein-rich but carry meaningful fat — great for growth, active animals, and putting weight on a thin pet, but a problem if you make them the staple for an animal prone to obesity. I feed them as part of a varied rotation, not as the only thing on the menu.
2. ◆They're phosphorus-heavy. Like nearly every feeder (BSFL being the exception), superworms have a poor calcium-to-phosphorus ratio. So I gut-load them 24-48 hours before feeding and dust with calcium for reptiles that need it. Don't believe any listing that calls them a balanced calcium source.

What to look for when buying

Whether you're after the lowest price or the healthiest worms, the same signals separate a good seller from a bad one:

Vibrancy and activity

Healthy superworms are lively and wriggle when disturbed, with shiny, golden-brown exoskeletons. Sluggish, dark, or shriveled worms signal poor health or rough shipping. A good seller's reviews will mention worms arriving active.

Live arrival guarantee

This is the one I won't skip. A live-arrival guarantee tells you the seller packs properly (insulated boxes, appropriate for the weather) and stands behind the shipment. Ordering across climate zones in summer or winter without one is a gamble.

Right sizing

Listings should clearly distinguish small (1-1.5 in) from medium/large (1.5-2 in). Match the size to your animal — too large is a choking and impaction risk. As a rule of thumb, prey shouldn't be wider than the space between the animal's eyes.

How they're reared

Worms gut-loaded on quality produce and grain before shipping are more nutritious. Sellers who tell you what they feed their stock are usually the ones worth buying from.

Bulk for value

Because superworms store for weeks at room temperature, buying in bulk genuinely saves money per worm — but only if you can store them right (below). For a multi-pet household this is the cheapest way to feed.

Storing superworms (the part people get wrong)

This is the single biggest superworm mistake, so I'll be blunt: do not refrigerate superworms. It's the opposite of mealworms. Mealworms can be chilled to slow them down; superworms are tropical and cold kills them. Here's the right setup:

• ◆Room temperature, ~70-80°F. A normal shelf is perfect.
• ◆Ventilated container with smooth sides so they can't climb out.
• ◆Bran or oats as bedding, 1-2 inches deep — it doubles as food.
• ◆A slice of carrot or potato for moisture, replaced before it molds.
• ◆No dampness. Excess moisture means mold, which is what actually kills stored colonies.

Keep them apart and at room temp and they stay in larval form for weeks. (Isolate individuals in dark containers only when you want them to pupate into beetles — grouping suppresses pupation, which is exactly why they store so long.)

Feeding them well

Gut-load 24-48 hours ahead with leafy greens, squash, or insect chow, then dust with calcium right before feeding. Offer as a treat or rotation item — two to three times a week for adult reptiles, more often for fast-growing juveniles, small daily portions for high-metabolism birds and exotics. Their movement is part of the value: it draws out natural hunting behavior and keeps animals engaged.

Where I buy

I order live, well-fed stock with a live-arrival guarantee from All Angles Creatures' superworm collection. Lively worms that arrive active and store for weeks are worth more than the cheapest listing that shows up half-dead.

Bottom line

Superworms are one of the easiest feeders to buy online: tough, shippable, and shelf-stable for weeks at room temperature. Buy from a seller with a live-arrival guarantee and clear sizing, never refrigerate them, gut-load and dust before feeding, and keep them as a rotation feeder rather than the whole diet. Do that and you've got a reliable, affordable protein source on hand whenever your animals need it.

Curious how they stack up nutritionally? See mealworms vs superworms and the exotic animals hub.