Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Neem oil works.

Neem oil should generally work on some pests. I think the main benefit comes with the leaf polishing. Your real houseplants will look fake or waxy, giving that "perfect" look. Be sure to add some dish soap or leaf penetrator such as wet betty, eliminating the water tension will help the stuff to stick. Also be sure to add some nutes such as dynagrow folilar. And be sure to adjust the PH to 5.5-6.0 depending on what you are growing. Buy a digital PH meter. Worth every cent, as you need to check your PH all the time! Another trick is diluting it in plain carbonated water to help add CO2. Good luck and happy growing :)