Our lead pest control expert has stated on our website the following (since the question has been asked several times while visiting homes in Brisbane and Gold Coast)

"If you have sensitivity issues, asthma or are pregnant it is considered a safety precaution to vacate the property of 4 hours. This is also recommended if you have a young baby that is of crawling age."

Read more --> https://www.pest-ex.com.au/health-safety/