Thanks guys. She was being fed 1-4 mice of unknown size once a month or when the previous owner "remembered".

For anyone who has used the reptile spray - can you also spray down the cage (without water bowl in it) and let it dry? I've only every applied directly to animals at the clinic - so their cages were not with them. She is currently in a pillow case in a box while I disinfect everything with chlorhexidine solution so I have time to run out and pick up the spray