If you're worried about rats and stuck on what to do, Alan has shared how a well-kept lawn can help keep rodents at bay. The broadcaster and horticulturist has shared his advice as rats actively seek food and shelter in UK gardens. Homeowners will be pleased to know there are easy ways to make their plots less appealing to the creatures. Speaking in a video for BBC Gardeners’ World Magazine, Mr Titchmarsh said: "Rats are furtive. Mr Titchmarsh said that longer grass gives rats easy access and cover to move about undetected.