yes look at night . i would get a red light or some type of heat source, and then place it in particular spot... mean while try to limit any other form of heat in the room . then leave the room for about 2 hours and then sneak in and be ready to catch it if its there, tokays hate people and are fast so it wont be easy. if he's not there then just look around high and low with a flash light you will hear the hissing and the light from the flash light will make it harder for him to see.i used this method to get my ball python back after he escaped. the most important thing to remember is...keep the door closed...it may also help if you put a container
full of noisy crickets near the heat source. hope this helps