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Groundhogs have a strong aversion to powerful scents, including garlic, ammonia, vinegar, hot peppers like cayenne, and predator urine. Various herbs such as rosemary, lavender, basil, mint, sage, thyme, and oregano can also act as deterrents. You can strategically use these odors around your property by planting these crops near your garden and by the entrances to groundhog burrows. Commercially available repellents offer another option, and for best results, scent-based deterrents should be used alongside other preventive measures.

It’s very rare to find mice in a bed frame or mattress outside of the most extreme infestation scenarios. That said, your bedroom isn’t off limits for mice if it offers them shelter, food, and warmth. Look for any gaps or openings a mouse could squeeze into, and don’t keep food in your bedroom. 

Squirrels rely heavily on their sense of smell and are deterred by a variety of scents. Some of the most effective smells for repelling them include peppermint oil, coffee grounds, white vinegar, garlic, cinnamon, rosemary, and predator urine. They also have a strong aversion to capsaicin, the compound that makes chili peppers hot, making capsaicin-based sprays an effective repellent for areas like gardens or bird feeders. For a DIY solution, you can create a spray from garlic and vinegar and apply it daily. Additionally, squirrels dislike strong, fresh scents, so placing items like strong-smelling soaps or dryer sheets in areas they frequent can also help keep them away.

Groundhogs usually keep their cool despite being easily spooked. However, there are exceptions—they might get defensive or territorial if they feel threatened or overly concerned. If they sense a threat to their babies, they could get feisty, too. These wild animals are not meant to be kept as pets. If you find babies or an injured groundhog, contact your local animal rescue or wildlife service for guidance.