Yantra blocks the spiracles of the insects killing them by suffocation & Vaayu kills the insect larvae by fumigant action,the body of larvae is burnt and at once exposed to environment deterioration gives black coloration Oxyveg produces toxins like bassionalide and dipicolonic acid which helps to increase productivity by improving the crop health by controlling pest. Vaayu Yantra & OxyVeg are organic products derived from herbal extract.