Postby belld » Fri Mar 21, 2014 4:16 pm
you have to block up all entry points - ahead of anything.
after that - put poison down - and wait for the smell.
they can squeeze through the tiniest of holes, and if you are in a terraced property, there may well be routes through the old party walls - the only way to solve this one would be to take up floors and render/seal the party walls.
We were delighted when we heard we had mice - as it meant we had killed all the rats (no joke)!
we usually always see rats on sites we work on - and when you walk along typical London streets you can see so many ingress points for the cheeky blighters! You must buy 5mm metal mesh and fit it tight to any air bricks etc.
Good luck!