Is it safe to combine Hartz flea drops with a flea collar on my dog?

Question

I'm wondering if it's safe to use HARTZ ULTRA GUARD PRO TRIPLE ACTION for flea, tick and misquitoe drops on my dog if she's already wearing a flea and tick collar? I think it's the same brand flea and tick collar it just doesn't have the misquito repellent the drops have. Plus the ticks are horrendous where we live so is it OK to put drops on her? Pet's info: Dog | Chihuahua | Female | unspayed | 2 years and 4 months old | 7 lbs

Laura Johnson VMD · Accepted Answer

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! I do not recommend combining Hartz products. It is a notoriously known company to cause side effects. I would change brands once the collar expires. I recommend the Seresto collar or the oral formulations for ticks (Nexgard, Simparica or Bravecto). Have a good day!

Is it safe to combine Hartz flea drops with a flea collar on my dog?

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