Pest Control... HELP!

Alright, my nosy landlord is coming around to all the apartments and spraying every baseboard, cabinet, and doing "pest control treatment".

I've got to figure out where I can move my tarantulas (out of the apartment, obviously..)....

Does anyone have any experiance with this.. and know how long my tarantulas need to be out of the apartment ?

I don't want them to get hurt.

Thanks,
Jeni