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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed | Female | unspayed | 18 lbs
My foster dog got nexgard 48 hours ago and I gave her a flea/tick bath yesterday! I found 2 ticks on her still alive can I use the liquid medication hartz has that you apply to the back? I don’t want to overdose this little girl. She is only 18 lbs
2 Answers
Answered By Andrea M. Brodie, DVM
Veterinarian
Published on August 2nd, 2018
Answered By Sara Farmer, DVM
Veterinarian
Published on September 22nd, 2018
Hartz does not make a topical that is in the same class of drugs as Nexgard so it should be safe to go ahead and give the Nexgard. If there is a major flea infestation you may need to treat the environment (house) as well - Advantage spray, Knockout spray or Fleabusters are what I typically recommend although your best bet is to use an exterminator. Nexgard kills fleas quickly so if you treat all pets in the home for three months it should take care of the environment.
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