Vinegar (acetic acid) has long been known as a natural way to kill unwanted vegetation. This product is 12% concentration of acetic acid and should be applied full-strength (undiluted) for the best results.
Concentrations of acetic acid greater than 6% should be handled with caution as they can be irritating or even harmful if handled improperly. Do not ingest, inhale or otherwise touch without gloves this material. If it comes in contact with skin or clothes, wash off with clean water as soon as possible.