The slightly rosey-minty smell is much more pleasant than smelling like a chemical insecticide. You can hang dried bunches to repel flies, gnats or other winged creatures in the house. Put it in vases around the home to repel pestiferous pests. Wear a dab of infusion or oil to keep fleas and mosquitoes at bay, and dab some on your pet s collar to do the same. Pennyroyal Tea was once used as a remedy for everything from headaches to colds to menstrual problems.
Some homeopaths still use the Oil for treatment of severe cramps.
See above precautions. Some references say Pennyroyal has a light scent slightly reminiscent of roses, although I don t notice it in mine. Interestingly, it is a wonderful companion plant for them, though. Pennyroyal doesn t spread as wildly as others in the mint family, but it is weedy enough to make a good insect-repelling border plant for a vegetable garden. It takes average, dry soil and full sun.