Hedgehogs typically roam between 1 and 2 kilometres every night, often visiting multiple gardens when foraging for food. Modern-day fences are designed for seclusion and privacy, which can be detrimental to local hedgehogs since fences prevent movement between garden properties. This causes hedgehog populations to become increasingly isolated, and impairs their ability to forage for sufficient food. An easy way of increasing access to enclosed areas is to cut a 5-inch (12-centimetre) hole into the fence board or the lower panels of your fence to provide unrestricted access for Grace and her friends to forage. When possible, use environmentally safe wood preservatives on sheds, fences etc. as hedgehogs often lick new smells or substances—your local garden centre should be able to advise.