Pregnant women should not clean litter boxes because of the risk of toxoplasmosis, a parasitic infection that can harm a developing baby

The main concern is a parasite called Toxoplasma gondii, which lives in cat feces. If you are pregnant and inhale dust or particles from an infected cat's litter box, you can catch the infection. Toxoplasmosis usually causes no symptoms in healthy adults, but it can cross the placenta and damage the fetus, potentially causing miscarriage, stillbirth, or serious birth defects including eye damage and brain damage.

The risk is real but not automatic—not all cats carry the parasite, and not all exposures result in infection. However, because the consequences for your baby can be severe, doctors recommend that pregnant women avoid litter box cleaning entirely. This is one of the clearest safety rules in pregnancy care, and it applies throughout all nine months.

Key Takeaways

  • Toxoplasma gondii, a parasite found in cat feces, can infect a pregnant woman and pass to her baby, causing miscarriage or birth defects.
  • You do not need to get rid of your cat—you just need to avoid contact with the litter box and its contents.
  • Ask a household member who is not pregnant to clean the litter box daily, since the parasite takes one to five days to become infectious in feces.
  • Wash your hands after petting your cat, and avoid touching your face until you have washed them.
  • Tell your doctor if you have already been exposed to cat litter during pregnancy so they can test you for infection.

How toxoplasmosis spreads from cats to humans

Cats become infected with Toxoplasma gondii by eating infected prey—mice, birds, and other small animals. Once infected, a cat sheds the parasite in its feces for one to three weeks, usually without showing any signs of illness. The parasite forms hardy structures called oocysts that become infectious one to five days after the cat deposits them in the litter box.

You catch the infection by inhaling dust or particles containing these oocysts, or by touching contaminated material and then touching your mouth or face. Cleaning a litter box creates dust and aerosol particles, which is why it poses the highest risk. Even handling the litter scoop or touching the box itself can expose you if you then touch your face before washing your hands.

Why the risk is higher during pregnancy

Your immune system changes during pregnancy to prevent your body from rejecting the fetus. This same change makes you more vulnerable to certain infections, including toxoplasmosis. If you catch the infection while pregnant, the parasite can cross the placenta and infect your baby.

The risk to the baby depends on when during pregnancy you become infected. Infection in the first trimester carries the lowest risk of transmission to the baby but the highest risk of severe damage if transmission does occur. Infection in the third trimester carries a higher chance of transmission but a lower chance of serious harm. Your doctor can test you to determine whether you have been infected and whether your baby has been affected.

Who should clean the litter box instead

Ask another household member—a partner, adult child, parent, or friend—to take over litter box cleaning for the duration of your pregnancy. The person cleaning should wear disposable gloves, wash their hands afterward, and clean the box daily. Daily cleaning is important because it removes feces before the parasite becomes infectious.

If no one else is available to clean the box, you can do it yourself only if you wear disposable gloves, avoid touching your face, and wash your hands thoroughly with soap and warm water when ready afterward. However, doctors still recommend against this if any other option exists. The safest approach is to have someone else handle it entirely.

Other ways to reduce your risk around cats

You do not need to avoid your cat during pregnancy. Petting your cat, playing with it, and sleeping near it are all safe. The risk comes specifically from contact with feces and the litter box environment.

Wash your hands after petting your cat, especially before eating or touching your face. Keep your cat indoors if possible, since outdoor cats are more likely to hunt infected prey and become carriers. Do not feed your cat raw or undercooked meat, which can also transmit the parasite. Avoid handling raw meat yourself, and if you do, wash your hands and all surfaces thoroughly—toxoplasmosis can also come from undercooked beef, pork, or lamb, not just from cats.

What to do if you have already been exposed

If you cleaned a litter box or had other contact with cat feces before you knew you were pregnant, or early in your pregnancy before you learned about the risk, tell your doctor. They can order a blood test to check whether you have been infected. The test looks for antibodies to Toxoplasma gondii.

If the test shows you have never been infected, you are protected going forward—you cannot catch it twice. If the test shows you have been infected, your doctor can order additional tests on your baby and discuss treatment options. Antibiotics can reduce the risk of the parasite crossing the placenta, so early detection matters.

Frequently Asked Questions

Do I have to give away my cat if I am pregnant?

No. You can keep your cat throughout your pregnancy. You just need to avoid the litter box and have someone else clean it. Cats themselves are safe to be around—the infection risk comes only from contact with feces.

What if my cat is indoor-only and seems healthy?

Even indoor cats can carry Toxoplasma gondii, and infected cats usually show no symptoms. You cannot tell by looking at a cat whether it is a carrier. The safest approach is to treat all cat litter as potentially infectious during pregnancy.

Can I catch toxoplasmosis from touching my cat's fur?

Toxoplasmosis spreads through feces, not through fur or saliva. You can pet your cat safely. Wash your hands afterward as a general hygiene practice, but the infection risk is very low from petting alone.

How long do I need to avoid the litter box?

Avoid cleaning the litter box throughout your entire pregnancy and for a few weeks after delivery, while your immune system is still adjusting. Once you are no longer pregnant or breastfeeding, the risk drops significantly.

What if I am not sure whether I have ever had toxoplasmosis?

Ask your doctor for a blood test. If you have been infected in the past, you have immunity and cannot catch it again. If you have never been infected, you know to take precautions during pregnancy. Testing takes the guesswork out of it.