How to Keep Feeder Insects Healthy
Feeder insects are live animals right up until the moment they are eaten. How you hold them between delivery and feeding affects how many survive, what condition they are in, and what your reptile actually gets.
Most of what goes wrong is avoidable, and the fixes are the same across species.
Give them more room than looks necessary
Crowding is the most common cause of losses, particularly with crickets. Insects packed tightly generate heat and moisture, foul their container faster, and pile on top of one another.
A container that looks too large for the number of insects in it is usually about right. Structures inside — egg flats and similar — add surface area and let the insects spread out instead of stacking.
Ventilation matters more than you would think
Still, humid air inside a sealed container is what turns a healthy batch into a bad one. Feeders need airflow, and most need their container to stay dry.
Damp is the enemy of crickets and mealworms in particular. If condensation is forming inside the container, something needs to change.
Remove the dead ones
Dead insects and spoiled food accelerate losses among the rest. Checking the container and clearing anything that has died or gone off is the single highest-value habit on this list, and it takes a minute.
A container that smells is telling you something. A well-kept batch of feeders should not have a strong odor; a strong smell usually means excess moisture, spoiled food, accumulated waste or dead insects.
Water without drowning them
Crickets will drown in an open dish of water. So will small feeders of most kinds.
Moisture is better delivered through food or through a watering method designed for feeder insects, rather than standing water. And avoid making the whole container damp in the process — the goal is available moisture, not a wet environment.
Feed them something worth eating
Whatever a feeder ate last goes into your animal. Gut contents make up a meaningful share of an insect's live weight, so a feeder that has been eating well is a different proposition from one that has been sitting in an empty tub.
This is also where a common confusion sits. Feeding fresh vegetables and greens keeps a batch in good condition and provides moisture — but it is not the same as calcium gut-loading, which requires a specifically formulated high-calcium diet. Both are worth doing. They are not the same thing.
Our gut-loading guide covers what the research actually shows about that.
Buy what you will actually use
The largest tub is rarely the best value. Feeders degrade in storage, and some degrade quickly — crickets and hornworms have a much shorter useful window than discoid roaches or mealworms.
Ordering an amount you will get through while the insects are still in good condition beats ordering more and losing half of it.
Different species need different things
Everything above applies broadly. The specifics do not.
Crickets are the most demanding feeder to keep alive. Discoid roaches are among the easiest, and adults live considerably longer. Mealworms are the most forgiving of neglect. Hornworms grow so fast that holding them is really a question of using them before they outgrow your animal.
We keep species-specific instructions in our Care & Storage guides — crickets, discoid roaches, mealworms and hornworms.
The short version
More space than you think. Good airflow. Keep it dry. Clear out the dead. Moisture without standing water. Feed them properly. Order what you will use.
None of it is complicated, and all of it shows up in what reaches your reptile.
Feeding & care note: The information provided here is general feeder-insect care guidance. Reptile dietary needs vary by species, age, size and health. Follow husbandry and feeding recommendations appropriate for your individual animal.