On Thu, 06 Oct 2011 03:56:39 +0100, Christina Websell wrote:

They were great for the woodpigeons, who nested in them all the time,

Do you plant things that are great for rats too? Wood pigeons are a pest
species with open licence to shoot them at any time of year. Letting them
finish breeding just exacerbated someone else's pest problems. Would you
make Rentokill leave the rats alone until the babies had left the nest?