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Armadillos have very strong smelling capabilities to track down insects efficiently. But this superpower is actually a double-edged sword because their extreme sense of smell also causes them to be more sensitive and deterred by strong odors. To keep them at bay, you can place small amounts of substances like vinegar, ammonia, and mothballs around your property and near armadillo hotspots.

Although you can technically flood an armadillo out of its hole, it’s important to remember that this can be potentially fatal to the animal. Armadillos sleep between 16 and 18 hours a day, and if you perform this technique while they’re deep in sleep, they may not awake soon enough to save themselves.

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.

Vinegar can be an insect repellant, as many bugs find its scent off-putting. However, vinegar is acidic and may also cause damage to any plants it comes in contact with. If you'd like to use vinegar to deter pests in your garden, be careful not to spray it directly on the plant's leaves or stems.

It's also worth noting that vinegar's effects can be short. To continue to repel bugs, you'll need to spray vinegar repeatedly. 

In certain cases, yes, the bees may go away on their own, but it’s a risk. Some bee types, such as bumblebees, create seasonal nests and then die out as their new queens seek homes elsewhere. But in most cases, you can’t count on the bees leaving naturally. It’s also not a great idea to leave openings in your walls any longer than you have to, which can attract other pests or cause moisture damage.