So lately I have had quite a few calls from clients saying they are hearing noises in their roof space.
Talking with the client more about the noises it would either be Rats or Possums.
You wont typically hear Mice
The only cost effective thing that can be done is to carry out a roof inspection, based on the droppings and other evidence found a treatment plan can be privided.
If its rats most likely a tamper resistant bait box will be installed, if possums a possum cage is require to catch and relocate the possum.
Just remember possums are a protected species so just throwing bait in a roof where the possum has access to can inadvertently kill the possum and fines etc may apply.