Spidermite Control Overview Advice Spider mites are a real hassle for growers. Spidermite Control is a great product that can resolve this problem. The mechanical action of the product suffocates the mites with an ultra-thin film of special oil. Completely safe for humans, safe for plants – Deadly for Spidermites! 100% Organic – 100% Safe – 100% Effective Spider mite Control is an easy to use leaf wash that acts against Spider mites. How to use: Mix 25ml of SMC into 1 litre of water Spray to and bottom of leaves with a fine mist Can be used at all stages of plant growth – however, avoid spraying on flowers.