Mealworm Mites - what are they and how to deal with them

When it comes to mealworm farming, you might hear about "mealworm mites" every now and then. But here’s the truth: mealworm mites aren’t really what they are. The most common mite issue in a mealworm colony is due to grain mites—tiny critters that can make themselves at home in the grain or substrate where mealworms live. Let’s dive into what grain mites are, why they show up, and how to keep your mealworm colony in tip-top shape by avoiding grain mites.

What Are Grain Mites?

Grain mites are microscopic, white mites that thrive in warm, humid environments, especially where there's food and grain. For anyone raising mealworms to feed chickens, reptiles, or wild birds, grain mites can be an unwelcome surprise. These mites can take over quickly if conditions are just right, but don’t worry—there are ways to control them.

How Grain Mites Affect Your Mealworm Colony

While grain mites don’t directly harm mealworms, they can cause issues in your colony if left unchecked. In a heavy infestation, mites compete for resources, making the environment less comfortable for your mealworms. If they get out of control, they will kill the mealworms and beetles.

Identifying Grain Mites in Your Mealworm Colony

If you’re not sure whether your colony has grain mites, here are a few signs to look for:

  • Dusty, white powdery appearance on the grain or bedding—this could be a sign of grain mites in large numbers.
  • Movement along container edges—these mites may cluster along container walls or the surface of the bedding.
  • Increased humidity—grain mites thrive in moist, warm conditions. Keeping an eye on temperature and humidity levels can help you spot mite-friendly conditions.

Tips for Preventing and Managing Grain Mites

Keeping grain mites at bay is all about managing their environment:

  • Lower humidity in your colony’s space, as grain mites thrive in moist areas. Try to keep humidity below 50% if possible.
  • Regular cleaning and replacing bedding. Make sure to clean any residue left by mites before adding new substrate.
  • Substrate maintenance is the best preventative.  ALWAYS deep freeze (0 Degrees F) or bake your substrate.

For those looking for clean, healthy mealworms for your reptiles, chickens, or wild birds, buying from a trusted source can make all the difference. At Midwest Mealworms, we take pride in delivering quality, well-cared-for mealworms without the hassle of grain mite infestations. 

Our Commitment to Quality Mealworms

We understand how important it is to receive a clean, mite-free mealworm shipment. That’s why we implement careful handling and monitoring practices to keep our mealworms healthy and grain mite-free. For more tips on mealworm care, don’t forget to sign up for our newsletter. You’ll get helpful insights straight to your inbox, as well as exclusive offers.

Ready to Start (or Grow) Your Mealworm Colony?

Whether you’re new to mealworms or a seasoned pro, we’re here to help you make the most of your mealworm-raising experience. Check out our selection of live mealworms to keep your reptiles, chickens, and wild birds well-fed and healthy.


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