N, N-Diethyl-meta-toluamide, also called diethyltoluamide or DEET, is the oldest, one of the most effective, and most common active ingredients in commercial insect repellents. From Wikipedia
The rigorous study tested ten sprays and 14 bite heaters, highlighting Anti Brumm Forte for its long-lasting protection and Autan Multi Insect as a budget-friendly option.