Intrigued by the growing interest in nanoagrochemicals, Melanie Kah, Rai Kookana, Alexander Gogos and Thomas Bucheli detected a lack of systematic comparison between fertilizers and pesticides in the nanoform and conventional products. In their view, such a comparison was essential to guide research and development in the field towards the right direction. They proceeded to scrutinize existing papers in the literature and assessed both the efficacy and potential hazard of nanofertilizers and nanopesticides. The results of their analysis were published in Nature Nanotechnology in May 2018 (Nat. Nanotechnol. 13, 677–684; 2018).