How long until my dog stops shedding roundworm eggs after deworming?

Question

Is it true that after deworming your dog for roundworms they stop shedding eggs in the environment after about 2 days? Then as long as you continue and complete on scheduled protocol you no longer have to worry about shedding eggs in the environment?

Destini R. Holloway, DVM · Accepted Answer

Yes, it is true that the pet stops shedding worms after about 7-10 days of getting rid of the worms themself, which can take up to 2 treatments (done 2 weeks apart). So you cannot expect a pet to immediately be non-infective, but you can safely say that after 3 weeks of the first treatment, followed by a second treatment done 2 weeks later, that the pet is no longer shedding eggs. Also keep in mind that heartworm prevention (i.e. Heargard, Trifexis, etc) has natural dewormer in it, so your pet can get monthly intestinal worm treatment as well, further reducing any inadvertent spread of worm eggs.

How long until my dog stops shedding roundworm eggs after deworming?

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