Home / Fertilisers & Feeds / Doff Bugs and Fungus control Doff Bugs and Fungus control 1 Litre Controls Powdery Mildew, Whitefly, Greenfly, Blackfly, Spidermite Safe for use on flowering plants Pesticide free Pests do not develop a resistance to repeat use Related products Farmyard Manure Read more Doff Concentrated Container Feed 1Ltr Read more Doff Liquid Seaweed Read more Organic Peat-free Compost Read more