In summer in Japan it is common to see mosquito coils outside homes. The smoke is a repellant.
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In Japan it's common to see the traditional 'katori senkō' (蚊取り線香) outside homes and in gardens during the summer.
To combat mosquitoes Ueyama Ei'ichirō (上山英一郎) developed incense sticks in the late 1800s mixed from starch, orange skin, and pyrethrum powder.
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