Yes, Critter Ridder Animal Repellent can be used in an attic. According to the product label:
Use in non-living areas only (attics, basements, cellars, storage areas, garages, sheds and barns). Using gloves, lightly sprinkle granules directly from container at a rate of 0.25 lbs/15 square feet (ft2) on areas to be protected. Repeat application after 30 days, if needed. 2.2 lbs. will protect approximately 130 square feet (ft2).
Answer last updated on: 07/24/2019