10 Natural Insect Repellents For Your Home Citronella Oil for Mosquitoes. ... Chalk for Ants and Slugs. ... Beer for Slugs. ... DIY Spider Repellent Spray. ... Cinnamon, Paprika or Garlic to Keep Out Ants. ... Diatomaceous Earth for Most Insects. ... Essential Oils for Ticks. ... Garlic Solution on Strips of Cloth. More items...