Using Insect Repellant during Pregnancy

The short answer to this question is that it is probably better to use natural products (usually containing citronella oil) that are certainly safe for use in pregnancy. The insect repellents that contain chemicals do absorb into your bloodstream, and therefore, will cross the placenta and reach your baby. The most commonly used (and effective) insect repellent contains a chemical known as DEET (diethyl-3-methylbenzamide).

There have been some concerns raised about the safety of using this repellent in pregnancy or on young children, but it seems that if the concentration of DEET is no more than 10% of any product, (repellents are available with DEET concentrations of 5% to 100%) the likelihood of adverse toxic effects are extremely unlikely. In high doses DEET is toxic and ingestion of the chemical has been associated with seizures and death.

If you are travelling to a malarial area, it would be better to use DEET than not, as citronella only lasts for a short period of time, and malaria is potentially fatal. It's best to get advice from your midwife or GP before planning to go overseas.