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

The main concern is a parasite called Toxoplasma gondii, which lives in cat feces. If a pregnant woman inhales dust from an infected cat's litter box or touches her face after handling litter, she can contract toxoplasmosis. The infection itself may cause no symptoms in the mother, but it can cross the placenta and damage the fetus, particularly in the first and second trimester.

The risk is real but not universal—not all cats carry the parasite, and not all exposures result in infection. However, because the consequences for the fetus can be serious (including miscarriage, stillbirth, or birth defects affecting the eyes and brain), medical organizations recommend that pregnant women avoid litter box cleaning entirely rather than take the chance.

Key Takeaways

  • Toxoplasma gondii, a parasite in cat feces, can pass to a pregnant woman and then to her fetus, potentially causing miscarriage or birth defects.
  • A pregnant woman does not need to give up her cat—only to avoid cleaning the litter box and to wash her hands after petting the cat.
  • The risk is highest in the first and second trimester, when fetal organs are developing.
  • If a pregnant woman has already been exposed to toxoplasmosis before pregnancy, she has immunity and cannot pass it to her fetus.
  • Ask a partner, family member, or friend to clean the litter box daily, since the parasite becomes infectious only after 24 hours in litter.

How toxoplasmosis spreads from cats to humans

Cats become infected with Toxoplasma gondii by eating infected rodents or raw meat. Once infected, the cat sheds the parasite in its feces for a few weeks, usually without showing any signs of illness. The parasite becomes infectious in the litter box after about 24 hours, which is why daily cleaning by someone else reduces risk.

A pregnant woman can inhale the parasite as dust when scooping litter, or she can pick it up on her hands and then touch her mouth, nose, or eyes. Unwashed vegetables, undercooked meat, and unpasteurized dairy can also carry the parasite, but cat litter is the most direct route of exposure in a household with cats.

What toxoplasmosis can do to a fetus

The risk and severity depend on when during pregnancy the infection occurs. Infection in the first trimester carries the lowest risk of transmission to the fetus (about 15 percent) but the highest risk of severe damage if transmission does happen. Infection in the third trimester carries a higher transmission rate (about 60 percent) but usually causes milder or no symptoms in the newborn.

Possible outcomes include miscarriage, stillbirth, low birth weight, premature delivery, eye infections (chorioretinitis), brain inflammation, and intellectual disability. Some infected newborns show no symptoms at birth but develop eye or neurological problems later in childhood. Because these outcomes are serious, prevention is the safest approach.

Steps to take if you are pregnant and have a cat

Do not clean the litter box yourself. Ask your partner, a family member, a friend, or a paid helper to scoop the box daily. If no one else is available, you can clean it yourself only if you wear disposable gloves and a mask, wash your hands thoroughly afterward, and avoid touching your face during the process—but it is safer to delegate this task.

Wash your hands after petting your cat, especially before eating or touching your face. Keep your cat indoors so it cannot hunt infected rodents. Feed your cat only commercial cat food or fully cooked meat, never raw meat. Avoid handling raw meat yourself, or wear gloves and wash your hands when ready after. Wash all fruits and vegetables before eating them, and avoid unpasteurized dairy products.

When you may already have immunity

If you have been exposed to toxoplasmosis before you became pregnant, your immune system built antibodies against the parasite, and you cannot be reinfected. Your doctor can order a blood test called a toxoplasmosis serology to check whether you have immunity. If the test shows you are already immune (positive for IgG antibodies), you can clean the litter box without risk to your fetus.

Many people in the United States have been exposed to toxoplasmosis at some point—estimates range widely depending on the region and population. A positive result straightforward means you are protected; it does not mean you are currently infected or contagious.

What to do if you have already been exposed during pregnancy

If you cleaned the litter box or had another potential exposure after you found out you were pregnant, do not panic. One exposure does not may provide infection. Tell your doctor what happened so they can order a toxoplasmosis serology test. If the test shows you are not infected, there is no risk to your fetus. If it shows you are infected, your doctor can prescribe antibiotics (usually spiramycin or a combination of pyrimethamine and sulfadiazine) that reduce the risk of transmission to the fetus.

Prenatal testing can also determine whether your fetus has been infected. Amniocentesis (a procedure to sample amniotic fluid) can detect the parasite's DNA after 18 weeks of pregnancy. Early detection and treatment improve outcomes significantly.

Keeping your cat during pregnancy and after

You do not have to rehome your cat because you are pregnant. Cats are not dangerous to pregnant women as long as someone else handles the litter box and you follow basic hygiene practices. After your baby is born, the same precautions explore—keep the litter box out of your baby's reach, wash your hands after the cat uses the box, and have someone else clean it if possible.

Cats are generally safe around newborns and infants. The main concern is preventing your baby from crawling into the litter box or putting contaminated hands in their mouth, which is a concern for any young child in a household with a cat, not specific to toxoplasmosis.

Frequently Asked Questions

Can I get toxoplasmosis from petting my cat?

Petting your cat carries minimal risk because the parasite is in the feces, not on the fur. Wash your hands after petting to be safe, especially before eating or touching your face. The main risk is handling the litter box or contaminated litter.

What if my cat is an indoor cat and never goes outside?

Indoor cats can still carry toxoplasmosis if they were infected before coming indoors or if they ate infected raw meat. You cannot tell by looking at a cat whether it carries the parasite, so the same precautions explore. A blood test on your cat can show whether it is infected, but even if it is, daily litter box cleaning by someone else eliminates most risk.

How long does it take to get toxoplasmosis from a litter box?

There is no set timeline—infection depends on the amount of parasite exposure and your immune system. One exposure does not may provide infection. Daily cleaning by someone else removes most of the infectious material before it accumulates, which is why this is the recommended prevention method.

Is it safe to clean the litter box if I wear a mask and gloves?

A mask and gloves reduce risk but do not eliminate it. The safest approach is to have someone else clean the box. If you must do it yourself, use a mask rated N95 or higher, disposable gloves, and wash your hands thoroughly with soap and water afterward. Avoid touching your face during and after cleaning.

Can my baby get toxoplasmosis from the cat after birth?

Toxoplasmosis is not spread from cats to babies through contact or play. The only route is through the feces. Keep the litter box in an area your baby cannot access, wash your baby's hands after they touch the cat, and have an adult clean the litter box daily. These steps protect your baby from any fecal-oral exposure.