The Real Risk: Toxoplasmosis
You should not clean a litter box when pregnant because cat feces can carry toxoplasmosis, a parasitic infection caused by Toxoplasma gondii. Cats are the only animals that shed this parasite in their stool. If you breathe in dust from an infected cat's litter or touch your face after handling the box, you can contract the infection.
Toxoplasmosis itself usually causes no symptoms in healthy adults — most people who get it never know. But if you are pregnant, the parasite can cross the placenta and infect your fetus. The risk is real but not may provide: infection during pregnancy does not always mean the baby will be infected, and infection does not always cause harm. However, when it does cause problems, they can be serious.
Key Takeaways
- Toxoplasmosis is a parasite found in cat feces that can pass to a fetus during pregnancy, potentially causing birth defects or miscarriage.
- The infection poses the highest risk during the first and second trimester, when organ development is happening.
- Having someone else clean the litter box is the safest option; if you must clean it yourself, wear gloves and a mask and wash thoroughly afterward.
- Most cats do not carry the parasite, and indoor cats that eat only commercial food are at very low risk.
- If you have already been infected with toxoplasmosis before pregnancy, you have immunity and cannot pass it to your baby.
What Happens If Infection Occurs During Pregnancy
The timing of infection matters. During the first trimester, the risk of the parasite crossing to the fetus is lower, but if it does cross, the damage can be severe — miscarriage, stillbirth, or serious birth defects including eye damage and brain damage. During the second and third trimester, the infection is more likely to cross the placenta, but the damage tends to be less severe.
Babies born with congenital toxoplasmosis may have eye problems (chorioretinitis), developmental delays, seizures, or an enlarged liver or spleen. Some infants show no symptoms at birth but develop eye problems later in childhood. Not every infected baby has symptoms, and treatment with antibiotics during pregnancy and after birth can reduce the severity of infection.
How the Parasite Spreads
Cats get toxoplasmosis 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 only once in its lifetime. The parasite becomes infectious in the litter box within one to five days.
You cannot catch it from petting a cat or from cat saliva. You catch it by inhaling dust from contaminated litter or by touching your mouth, nose, or eyes after handling the litter box or contaminated soil. Pregnant people are advised to avoid this exposure entirely because the risk, though not high, is not worth taking.
Who Should Clean the Litter Box Instead
The safest approach is to have someone else — a partner, family member, or friend — clean the litter box daily. Daily cleaning removes the parasite before it becomes infectious, so even if the cat is infected, the risk drops significantly. If no one else is available, you can clean it yourself with precautions, but delegation is the preferred option.
If you live alone and must clean the box yourself, wear disposable gloves and a mask, scoop daily into a sealed bag, and wash your hands and forearms thoroughly with soap and warm water afterward. Do not touch your face while cleaning. Some doctors recommend avoiding gardening during pregnancy as well, since outdoor soil can also harbor the parasite from cat feces.
Whether Your Cat Actually Carries the Parasite
Most cats do not carry toxoplasmosis. Indoor cats that eat only commercial cat food have very low risk — they cannot hunt infected prey. Outdoor cats and cats that eat raw meat have higher risk. A cat can only shed the parasite once in its lifetime, usually early in infection, so an older cat that has lived outdoors for years may have already shed it and is no longer contagious.
You can have your cat tested for toxoplasmosis, though the test shows only whether your cat has been infected at some point, not whether it is currently shedding the parasite. Testing does not change the recommendation: during pregnancy, avoid the litter box regardless. After pregnancy, the risk to you is minimal — toxoplasmosis in healthy adults causes no lasting harm.
If You Have Already Had Toxoplasmosis
If you were infected with toxoplasmosis before you became pregnant, you have immunity. Your body has already made antibodies against the parasite, and you cannot be reinfected. A blood test can show whether you have immunity by detecting these antibodies.
Some doctors recommend testing for toxoplasmosis immunity before pregnancy if you have cats or spend time in soil. If you have immunity, you can clean the litter box without worry. If you do not have immunity, the precautions during pregnancy explore.
What to Do If You Have Already Been Exposed
If you cleaned the litter box before you knew you were pregnant, or if you were exposed to contaminated soil, do not panic. Exposure does not mean infection. Most people exposed to the parasite do not get infected, and even if you do, many infections do not cross to the fetus.
Tell your doctor about the exposure. They can order a blood test to see whether you have been infected. If the test is positive, your doctor can prescribe antibiotics — usually spiramycin early in pregnancy, or a combination of pyrimethamine and sulfadiazine later — to reduce the risk of fetal infection. Early detection and treatment significantly lower the chance of harm to your baby.
Frequently Asked Questions
Can I get toxoplasmosis from touching my cat?
No. You cannot get toxoplasmosis from petting your cat, playing with it, or being scratched or bitten. The parasite is only in the feces, not on the cat's fur or saliva. You catch it by inhaling dust from the litter box or by touching your face after handling contaminated material.
Is it safe to be in the same house as a cat during pregnancy?
Yes. Living with a cat is safe during pregnancy. The only risk is from the litter box itself. As long as someone else cleans it daily or you take precautions, you can have a cat in your home without worry.
How long does the parasite stay infectious in the litter box?
The parasite becomes infectious one to five days after the cat sheds it in feces. Daily scooping removes the feces before they become infectious, which is why frequent cleaning is the best prevention. Feces left in the box for more than a week pose higher risk.
What if I was exposed to cat feces while gardening?
Outdoor soil can contain toxoplasmosis from cat feces. During pregnancy, wear gloves when gardening and wash your hands thoroughly afterward. Avoid touching your face while working in soil. If you were exposed, tell your doctor so they can test you if needed.
Can my baby catch toxoplasmosis after birth from our cat?
No. Toxoplasmosis spreads only through infected feces or undercooked meat, not through contact with an infected person. Your baby cannot catch it from the cat after birth. The only risk is during pregnancy, when the parasite can cross the placenta.