• Drops for Dogs

      The primary active ingredient in Hartz® UltraGuard® flea & tick treatments is Etofenprox. With a long history of effective flea and tick control, and a very low mammalian toxicity, Etofenprox is an effective topical active to control fleas, ticks and mosquitoes on dogs.

      Click below for the Etofenprox mode of action.

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      Effective Flea and Tick Control

      Hartz® UltraGuard Pro® Flea & Tick Treatment for Dogs and Puppies is a highly effective combination of three proven active ingredients:

      • Etofenprox (55%) one of a class of pyrethroid compounds, which has been shown to be highly effective in starting to kill adult fleas within 15 minutes, kills Brown Dog and Deer Ticks and repels mosquitoes. 
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      • Pryiproxifen (Nylar, 0.5%) a potent Insect Growth Regulator (IGR) that prevents flea eggs from developing, and stops the flea life cycle.
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      • S-Methoprene (0.25%) is a potent Insect Growth Regulator (IGR) that prevents flea eggs from developing, and stops the flea life cycle.
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      Efficacy against immature fleas.
      Efficacy of Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies in preventing egg hatch and adult emergence of fleas is illustrated in Table 1.

      Weekly collections of C. felis eggs showed reductions of 96% or greater Egg Hatch and 97% or greater Adult Emergence through the 33 day study.

      EPA Guideline 810.330 - Pre-Adult Flea Efficacy
      A study to measure the efficacy of an Adultcide/IGR product against C. felis egg hatch and adult emergence

      Table 1

      Conclusion: The study demonstrates that Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies reduced egg hatch by 96% or greater while reducing adult emergence by 97% or greater through the duration of the 33 day study.

      Efficacy against fleas.
      Efficacy of Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies against fleas is illustrated in Table 2.

      Forty - eight (48) hours after treatment or weekly reinfestations of 100 C. felis., efficacy readings of 96% or greater were recorded throughout the 30 day study


      EPA Guideline 810.3300 - Flea Efficacy
      A study to measure the efficacy of an Adultcide/IGR product against a C. felis infestation of dogs.

      Table 3
      Conclusion: The study demonstrates that Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies maintained an efficacy of 96% or greater against C. felis through the duration of the 30 day study.
      Efficacy against ticks.
      Efficacy of Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies against ticks is illustrated in Table 3.

      Forty - eight (48) hours after weekly reinfestations of 50 R. sanguineus, efficacy readings of 92% or greater were recorded throughout the 30 day study


      EPA Guideline 810.3300 - Tick Efficacy
      A study to measure the efficacy of an Adultcide/IGR product against R. sanguineus infestations on dogs.

      Conclusion
      Conclusion: The study demonstrates that Hartz® UltraGuard Pro® Triple Action Flea and Tick Drops for Dogs and Puppies maintained an efficacy of 92% or greater against R. sanguineus from Day 9 through the duration of the 30 day study.