When your guinea pig starts scratching constantly, losing patches of fur, or developing crusty skin, mites are often the culprit. These tiny parasites can make your pig miserable, but the good news is that mites are very treatable. The key is acting quickly and following a complete treatment plan that addresses both the bugs and your pig’s comfort. Here is exactly how to handle mites from start to finish.
1. Confirm the Problem With Your Vet
Before you buy any treatment, you need a vet to confirm mites. Guinea pigs can have skin issues that look like mites but are actually fungal infections or allergies. A vet will do a skin scrape or use a microscope to check for mites. They can also prescribe the safest medication for your pig’s weight and age. Never use over-the-counter mite sprays or powders made for dogs or cats, as these can be toxic to guinea pigs. Ask your vet about ivermectin injections or oral doses, or selamectin (Revolution) topical drops, which are both common and effective.
Do not use any flea or tick products containing permethrin on guinea pigs. These can cause seizures or death. Always stick to treatments your vet specifically prescribes for your pig.
2. Treat All Guinea Pigs in the Home
Mites spread easily between cage mates, so if one pig has mites, assume all do. Even if others show no symptoms, they can carry mites. Your vet will likely recommend treating every guinea pig in the household at the same time. This prevents re-infestation. The treatment schedule usually involves two to three doses given two weeks apart to break the mite life cycle. Mark your calendar so you do not miss the follow-up doses.
3. Deep Clean the Cage and Accessories
Mites can survive off your guinea pig for a short time in bedding and hiding spots. While you treat the pigs, you must also clean their environment. Remove all bedding, hay, and food. Wash the cage with a pet-safe disinfectant or a 50/50 vinegar and water solution. Rinse thoroughly and let it dry completely. Toss out any wooden hides or chew toys that cannot be washed, as mites can hide in cracks. Replace with fresh, clean items. Wash all fleece liners and soft items in hot water with fragrance-free detergent and dry on high heat. Repeat this deep clean after each treatment dose.
4. Soothe Your Guinea Pig’s Skin
Mites cause intense itching, and your pig may have scabs, bald patches, or flaky skin. While the medication kills the mites, you can help your pig feel better. Ask your vet about a gentle oatmeal bath or a vet-informed anti-itch spray. Never use human lotions or essential oils, as these can be harmful. You can also offer extra vitamin C (through vegetables like bell peppers or a vet-recommended supplement) to support skin healing. Keep an eye on scratching, and if your pig seems to be in pain, contact your vet for pain relief options.
“Mites are miserable for guinea pigs, but with prompt vet care and a thorough clean, most pigs are back to their happy, wheeking selves within a few weeks.”
5. Prevent Future Infestations
Once the mites are gone, you want to keep them away. Mites often come from contaminated hay or bedding, or from contact with other infested animals. Buy hay and bedding from reputable sources and store them in a dry, clean area. Quarantine any new guinea pigs for at least two weeks before introducing them to your existing pigs. During quarantine, watch for scratching or hair loss. If you adopt a rescue pig, ask about their mite history. Regular cage cleaning and a healthy diet also help your pig’s immune system stay strong. For more tips on keeping your guinea pig healthy, check out our guide on guinea pig care essentials.
6. Know When to Call the Vet Again
Most guinea pigs improve quickly after the first treatment, but sometimes complications arise. If your pig stops eating, loses weight, or develops open sores from scratching, see your vet immediately. Mites can lead to secondary bacterial infections that need antibiotics. Also, if the itching continues after two full rounds of treatment, your pig might have a different condition like ringworm or an allergy. Your vet can run additional tests. Remember, you are your pig’s best advocate, so trust your instincts if something feels off. For a deeper look at common guinea pig skin problems, read our article on guinea pig skin conditions.
Did you know that guinea pigs can get two main types of mites? The most common is Trixacarus caviae, which causes intense itching and hair loss. The other is Chirodiscoides caviae, which usually lives on the fur without causing symptoms. Only a vet can tell them apart under a microscope.
Treating mites is a straightforward process when you follow these steps. The most important thing is to act fast, see your vet, and be consistent with treatment and cleaning. Your guinea pig will thank you with happy wheeks and healthy fur. For more advice on keeping your pet comfortable during illness, see our guide on caring for a sick guinea pig.