Late at night, not a creature is stirring, except for the mice scratching away in the ceiling - as I am a renter, I can not access the ceiling, nor do any damage to the property. The real estate agent is currently unavailable (please don't focus on this).
I have tried hitting the ceiling, hoping to scare them away, and have checked to see if the critters have made a hole either inside or out, there appears to be none.
I can not afford pest control as well.
What is a lifehack that can get rid of these critters from my ceiling?