To provide a method for controlling harmful arthropods.SOLUTION: Provided is a control method using a composition including: a compound of the following formula, which is synthesized from 6-methoxypyrimidine-4-carboxylic acid in 8 steps； and one or more ingredients selected from the group consisting of (a) the group consisting of insecticidal active ingredients, miticidal active ingredients, and nematocidal active ingredients, (b) disinfectant active ingredients, (c) plant growth regulating ingredients, (d) phytotoxicity mitigation ingredients, (e) synergists, (f) repellant ingredients, (g) molluscicidal ingredients, (h) insect pheromones, (i) herbicidal active ingredients, and (j) microbial materials.SELECTED DRAWING: None【課題】有害節足動物の防除方法の提供。【解決手段】例えば、６－メトキシピリミジン－４－カルボン酸から８工程で合成される下式化合物と、(a):殺虫活性成分、殺ダニ活性成分及び殺線虫活性成分からなる群、(b):殺菌活性成分、(c):植物成長調整成分、(d):薬害軽減成分、(e):共力剤、(f):忌避成分、(g):殺軟体動物成分、(h):昆虫フェロモン、(i):除草活性成分、並びに(j):微生物資材からなる(a)～(j)の群より選ばれる１以上の成分とを含む組成物を用いる防除方法。【選択図】なし
