The method that works on most building materials would be to use expanding foam and wire wool for holes up to 50mm. For holes over 50mm wire mesh can be used to temporarily exclude rodents from the building. However, longer term a more permanent repair should be sourced.
Of course we can’t cover every area of proofing and possible entry points in our short guide but we’d be more than happy to talk to you. Just contact us if you’d like any further information.