Do NOT use pennyroyal!!! Pennyroyal oil is HIGHLY toxic! The dried leaves are ok to use, maybe as a sachet for your pocket, and it’s even ok (probably?) for your dog to roll around in it. But NOT the oil—too concentrated! This is true for BOTH American false pennyroyal and European pennyroyal. There are lots of restrictions on its use. You really need to vet your information! People could get hurt.
Do NOT use pennyroyal!!! Pennyroyal oil is HIGHLY toxic! The dried leaves are ok to use, maybe as a sachet for your pocket, and it’s even ok (probably?) for your dog to roll around in it. But NOT the oil—too concentrated! This is true for BOTH American false pennyroyal and European pennyroyal. There are lots of restrictions on its use. You really need to vet your information! People could get hurt.