Quick Answer
- Mites are tiny parasites that feed on reptiles. On iguanas they often look like tiny red, orange or black moving dots, especially around the eyes, ears, dewlap, armpits and skin folds.
- Signs include rubbing, extra soaking, poor shedding, raised scales, lethargy and, in heavy infestations, anemia.
- See a reptile veterinarian for a treatment plan. Some products sold for dogs and cats can be dangerous to reptiles.
- The enclosure must be cleaned thoroughly at the same time, or mites come back.
- Quarantine new reptiles to prevent infestations.
What Are Iguana Mites?
Mites are tiny arachnids, relatives of ticks and spiders, that live on the skin and feed on blood or tissue fluids. The red mites commonly found on iguanas belong to the genus Hirstiella, which veterinary studies have documented on captive green iguanas. The snake mite (Ophionyssus natricis), a common pest in reptile collections, can also affect lizards. Mites breed quickly and can spread through an enclosure, a collection and even between rooms.
Signs Your Iguana Has Mites
| What you see | Details |
|---|---|
| Tiny moving dots | Red, orange or black specks, often around the eyes, ears, nostrils, dewlap, armpits, vent and between scales |
| White or ash-like specks | Mite droppings on the skin or in water |
| Dead mites in water | Tiny dots floating in the water dish after soaking |
| Behavior changes | Rubbing, scratching, restlessness, long soaks |
| Skin problems | Raised or crusty scales, poor or patchy shedding, sores |
| Weakness | Lethargy, poor appetite and, in heavy infestations, pale gums from anemia |
To check, wipe a damp white paper towel over the iguana and look for small dark or red specks, and examine skin folds with a magnifying glass in good light.
Why Mites Are Serious
A few mites may seem minor, but infestations grow fast. Heavy infestations stress the iguana, interfere with shedding, damage skin, can cause anemia, and may spread infections. Mites can also bite people: a 2023 case report described skin lesions in an owner linked to Hirstiella mites on a pet iguana.
How Mites Get into an Enclosure
- A new reptile that was not quarantined
- Contact with other reptiles, such as at shows or shops
- Used enclosures or decor that were not disinfected
- Wild-collected branches, rocks or substrate
How Iguana Mites Are Treated
Treatment should be planned with a reptile veterinarian, who can confirm the parasite and choose a safe product and dose. Veterinary options studied for iguana mites include topical fipronil and ivermectin, used off-label under veterinary direction. Some reptile mite products are sold over the counter, but the safety of each product differs.
Do not use flea or tick products made for dogs and cats, insecticide sprays or home remedies on your iguana without veterinary advice. Products, concentrations and doses that are safe for mammals can be dangerous for reptiles, and some products are meant only for treating the enclosure, not the animal.
Your vet may also recommend warm soaks to help remove mites, and check for anemia or secondary infections.
Cleaning the Enclosure
Treating the iguana alone is not enough. Mites and their eggs live in the enclosure. A typical cleanup involves:
- Moving the iguana to a simple, easy-to-clean temporary enclosure with paper towels, a water dish and proper heat and UVB.
- Throwing away all substrate and any porous decor that cannot be disinfected, such as wood pieces or cork that cannot be heat-treated.
- Scrubbing and disinfecting all surfaces, shelves, dishes and hard decor with a reptile-safe disinfectant, then rinsing and drying thoroughly.
- Using paper substrate for several weeks so you can spot any returning mites.
- Repeating treatment and cleaning on the schedule your vet recommends, because mite eggs can hatch after the first round.
Preventing Mites
- Quarantine new reptiles in a separate room for at least several weeks, with separate tools.
- Buy from reputable breeders and inspect animals before bringing them home.
- Wash hands and change clothes after handling other people's reptiles.
- Heat-treat or disinfect wild-collected branches and rocks before use.
- Check your iguana regularly, especially after shedding and soaking.
Mites vs. Other Specks on Iguanas
| Looks like | Could be |
|---|---|
| Moving red or black dots | Mites |
| Larger, flat, attached parasites | Ticks (more common on wild-caught iguanas) |
| Yellow or crusty patches | Possible skin infection; see a vet |
| Dull, papery patches | Normal shedding; see iguana shedding |
Frequently Asked Questions
What Do Iguana Mites Look Like?
Tiny red, orange or black dots that move, often around the eyes, ears, dewlap, armpits and skin folds.
Can Iguana Mites Live on Humans?
They do not establish on people, but they can bite. A 2023 case report linked skin lesions in an owner to mites from a pet iguana.
How Do I Get Rid of Mites on My Iguana?
Work with a reptile vet on a safe treatment, and thoroughly clean and disinfect the enclosure at the same time. Repeat as advised.
Can I Use Dog Flea Treatment on My Iguana?
Not without veterinary advice. Products made for dogs and cats may be unsafe for reptiles or need very different doses.
Sources: Colorado Exotic Animal Hospital, Mite Infestations in Reptiles; PubMed, Hirstiella Infestation in a Client-Owned Iguana (2023); Parasitology (Cambridge), study of fipronil for hirstiellosis in captive green iguanas. This page is general information, not veterinary advice.
