| 摘要 |
Device which is intended for dispensing insecticide vapors and which can be used in or on a heating apparatus, the said device consisting of several different juxtaposed solid compositions each containing a substance with an action against insects, which is absorbed in an absorptive bulk material, the said active substance being chosen, in at least one of the compositions, from the group comprising the pyrethrinoids and the isopyrethrinoids. |
