Yes, dryer sheets can help repel mice. The strong artificial fragrances found in many dryer sheets, such as citrus, floral, or lavender, are unpleasant to mice, which are very sensitive to smells. Many people report success using them to deter mice from areas like cars, drawers, vents, and cupboards. The scent can last for many days, making the space undesirable for rodents. However, dryer sheets may not be a foolproof solution on their own. For more effective protection against rodent infestations, it is best to combine them with other preventive measures like traps, repellent sprays, and proper storage practices.

No, poison isn’t the best way to deal with animals in your attic. It’s unlikely to completely eradicate the problem, especially if you don’t take care of access points. Also, poisoned animals may die and decay in the attic, causing noxious odors. 

Some animals may leave the attic before the poison kills them, which could lead to nearby pets or other wildlife eating the animals and becoming poisoned themselves. Ultimately, it’s better to avoid using poison and contact a professional instead.

Professional treatments can be immediate but may require follow-up for complete effectiveness, lasting several weeks.

For a non-chemical bed bug treatment, you can try spraying your mattress with a mixture of essential oils, rubbing alcohol, and water. Pesticide sprays are available, but using them can pose potential health risks to humans and pets—especially if they are not applied correctly. If non-chemicals do not eradicate your bed bug infestation, you should consult a pest control specialist to determine the best course of action.