How do I keep my Ts safe while my house is sprayed for pests?

We have people coming to spray our house for pests. We told them we have tarantulas and they said if we keep the window to that room closed it should be fine. Also they will not spray in that room. I am still worried that it could harm some of my slings. Has anyone had experience with pest control. I've read some things online that said they would have to physically walk across the poison to be effected and most of the spray is going outside. The only other rooms will be the bathrooms and kitchen. Should I take extra precautions? My reptiles are in the same room as my Ts so if anyone has any experience with them too I'd appreciate the advice.