Squirrels
Before trying to prevent them gaining access into a loft you are normally best to kill and remove the current individuals.
Otherwise they will be very determined to get back regardless of your efforts. Sometimes repairing a roof to stop them entering is not practical or too expensive.
Squirrels are however, easy to control using traps. In London, where poisoning grey squirrels is illegal, instant kill traps like the “Kania” make the job relatively straightforward. The control process involves setting traps close to where they arrive inside the loft, then arranging for a second visit to remove any carcass.
