Is the Herb Pennyroyal Good to Combat Spiders?

Spiders

• Sprinkling the dried form of pennyroyal may cause spiders to retreat, as they dislike the scent of mint. However, it is not the most effective form of spider control. Pennyroyal is more useful as an ant or flea repellent. It's Latin name is derived from the word 'pulex,' which is Latin for flea.

Biology

• The natural essential oil contains a high concentration of pulegone, which is a naturally occurring organic compound. This gives off a slightly antiseptic smell. However, it can be toxic in large doses and is arbortifacient. The smell is what makes it unattractive to certain pests.

Uses

• It's useful to grow in pots and place on a windowsill or in between paving slabs to repel ants. Simply pick some pennyroyal leaves and rub where there is an infestation of ants. Rub hard enough to release the juice of the plant. When used as an oil, it can act as a flea repellent. The plant itself is toxic to cats.

Spider Repellents

• There are many natural spider repellents. Placing horse chestnut seeds indoors can keep spiders at bay. Spiders also dislike lemon, eucalyptus, vanilla and sweet clover.