Shawn Woods grew some ultra-hot Carolina Reaper peppers in his backyard to find out if they can be used as a rodent repellent. He first ate a whole pepper himself and it made him cry. Then he mixed up some Carolina Reaper into grains and seeds to see if rodents would stay away. The video camera shows that the mice and rats were not bothered by the peppers and pepper juice. Conclusion – hot peppers are ineffective as a rodent repellent.