We've recently heard a lot of scratching happening on our exterior walls which I thought at first might have been coming from outside, but I now think may be from inside the wall cavity.
Assuming my hunch is correct and we have rats, should I be going to an exterminator, a builder, or perhaps a drain specialist to get some CCTV down there and check for entry points first?
Unfortunately in their infinite wisdom the previous occupants built over the man-hole covers in my house so I'm not even sure where the drain access might be - possibly under the floor boards where the rear extension now sits - I certainly can't see any man-hole covers neither at the rear or front of my property. That's assuming they're coming in through the drains.
Last thing I want is for these to die inside the cavity wall and stink the place out so I think I'll need to establish where they're coming in rather than just lay poison.
Assuming my hunch is correct and we have rats, should I be going to an exterminator, a builder, or perhaps a drain specialist to get some CCTV down there and check for entry points first?
Unfortunately in their infinite wisdom the previous occupants built over the man-hole covers in my house so I'm not even sure where the drain access might be - possibly under the floor boards where the rear extension now sits - I certainly can't see any man-hole covers neither at the rear or front of my property. That's assuming they're coming in through the drains.
Last thing I want is for these to die inside the cavity wall and stink the place out so I think I'll need to establish where they're coming in rather than just lay poison.