When you fail to control pest and disease with companion planting and our natural oil pest control concentrates, its time to consider Neem Oil. Neem oil is a great method of natural pest control, however as it leaves an off tasting residue, so should not be used within a few weeks of harvesting your herbs.
Usage: Neem oil is extremely concentrated. Dilute to 5% in warm water in a spray bottle. Apply at night just before sunset. Test on a small area of your plants first and wait and see the reaction. You may need to use a few nights in a row for bad infestations.