What Is Gutloading?
Gutloading is the practice of feeding feeder insects — like crickets — a highly nutritious diet for 24 to 72 hours before offering them to your reptile, amphibian, or other insectivorous pet. The idea is simple: the cricket's gut becomes packed with beneficial nutrients, which are then transferred directly to your pet when it eats the cricket.
Without gutloading, crickets fed a poor diet are often described as "empty calories" — they provide bulk but little genuine nutritional value. Proper gutloading can dramatically improve your pet's health over time.
Why Gutloading Matters
Reptiles like bearded dragons, leopard geckos, and chameleons depend heavily on live feeder insects for key nutrients. A cricket that has been eating cardboard or stale grain carries far fewer vitamins and minerals than one that has been dining on fresh vegetables and quality protein. Key nutrients you can deliver through gutloading include:
- Calcium — critical for preventing metabolic bone disease
- Vitamin A — supports eye health and immune function
- Vitamin C — an antioxidant important for tissue repair
- Protein — essential for growth and muscle development
- Hydration — moisture-rich foods keep feeder insects hydrated
Best Foods for Gutloading Crickets
Vegetables (Excellent Choices)
- Collard greens and mustard greens
- Kale and dandelion greens
- Carrots and sweet potato (raw)
- Butternut squash
- Zucchini
Fruits (Use Sparingly)
- Apple slices (no seeds)
- Mango pieces
- Papaya
Grains and Protein
- High-quality dry dog or cat food (low salt)
- Wheat bran or oats
- Commercially prepared gutload powders or pellets
Calcium Supplements
- Crushed eggshells mixed into food
- Calcium-fortified gutload products
Foods to Avoid When Gutloading
Some foods are harmful to crickets or negatively affect the nutrients passed to your pet:
- Spinach and beet greens — high in oxalates which bind calcium
- Broccoli and cabbage in large amounts — can interfere with iodine absorption
- Iceberg lettuce — mostly water with negligible nutrition
- Salty, processed, or sugary snacks — harmful to crickets
How to Gutload: Step-by-Step
- Separate the crickets you plan to use into a clean, escape-proof container 24–72 hours before feeding time.
- Remove old food and clean the gutloading container to prevent mold.
- Offer a variety of fresh vegetables and a dry grain or protein source.
- Provide moisture through fresh vegetables or a damp paper towel — avoid open water dishes where crickets can drown.
- Feed crickets to your pet within 24–48 hours for peak nutritional content.
Commercial vs. Homemade Gutload
Commercial gutload products offer convenience and are formulated to meet specific nutritional ratios. Homemade gutload using fresh produce can be equally effective if you use a diverse mix of vegetables. Many experienced keepers combine both approaches — using fresh greens as the base and supplementing with a commercial product for peace of mind.
Final Thoughts
Gutloading is one of the most impactful things you can do for your insectivorous pet's health. It takes minimal effort but pays off significantly in your animal's long-term wellbeing. Make it a routine part of your cricket-keeping process, and your pet will reap the nutritional rewards.