| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric mosquito repellent mat, which facilitates the recognition of the presence or absence of the active ingredients and with which the user can visually and clearly check the decrease or disappearance of the exterminating effect. SOLUTION: The electric mosquito repellent mat contains, as an active ingredient detector, at least one pigment selected from (1) anthraquinone-based blue pigments and (2) methine- and anthraquinone-based yellow pigments.
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