Ben's 100 Tick & Insect Repellent contains 95 percent DEET, the highest concentration -- and therefore one of the longest lasting DEET formulas available from any manufacturer. It is recommended for use in areas of heavy insect infestation, comes in 1.25 oz.pump spray. Ben's 30 Tick & Insect Repellent contains 30% DEET and is the amount recommended from the Centers for Disease Control and Prevention, for protection from disease carrying insects, comes in 6 oz pump spray. New Ben's 30 Wipes contains 30% DEET and offer outdoor enthusiasts the same effective alcoholfree 30% DEET-based formula that the Ben's brand is famous for, but in a delivery system that affords far greater application control and convenience, for those who need long lasting protection against biting insects and ticks. Ben's is proven to repel ticks, mosquitoes, black flies,chiggers, deer flies and other biting insects. Comes in a 3 or 12 wipes per pack.