Petco Text Logo
Petco Pet Logo

My dog still has live worms after OTC dewormer. What's next?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | unspayed | 2 months and 19 days old | 1lb

I gave all my dogs some OTC dewormer the first dose on 8/4 and second dose on 8/18 like it states. Then after that it's every 30 days. My question is outta all 5 of my chihuahua's (2-1 yr olds and 3-2 1/2 mon olds) she is the only one still pooping out live worms! What can I do and do I need to treat them all again? If so will it be safe? I used Pro sense liquid dewormer.

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on August 27th, 2017

There is no need to treat the others but she needs to be treated again, this dewormer is probably not very effective, i strongly recommend getting a better quality dewormer such as Drontal or Panacur.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored