mighty mint - 16oz spider repellent peppermint oil - natural spray for spiders and insects - non toxic mighty mint get rid of spiders quickly and safely. mighty mint spider repellent is a high-strength spray created to repel spiders without harmful chemicals. this formula is made with natural peppermint essential oil, which is well-documented as a highly effective deterrent for spiders and other insects. great for homes and businesses, indoors or outdoors.