To get rid of ants, put small piles of cornmeal where you see ants. They eat it or take it home to the others. It may take a week or so, especially if it rains, but it works and you don’t have the worry about pets or small children being harmed!
Natural Spider Repellents - 8 Ways to Get Rid of Spiders in the House PLUS 5 No Muss, No Fuss Tips to Reduce the Number of Spiders in Your Home (let them live in the garden, though- spiders are friends!
How To Keep Rabbits Out Of Your Garden Safe And Easy