An organic alternative to using chemical based pesticides is citrus oil. Citrus oil can be used as an effective pesticide against common pests that congregate onto cannabis plants such as spider mites, aphids, and whiteflies. It is also a great option to use in combination with neem oil to make these organic pesticides more effective.
This product from The AMES Company comes in a concentrate so just add water and you can spray your plants immediately. Citrus oil is great to use as a preventative as well as a treatment for pests so it is worth investing in some of this stuff to keep your plants healthy and insect free. Being organic it is also completely safe to use if you have pets roaming around your garden. You can also use it throughout the growing cycle up until you harvest your buds.