When to Start Heartworm Treatments


Heartworm preventative isn’t really a preventative, it kills the larvae ALREADY in your dog, so you give it 4 – 6 weeks AFTER mosquitoes show up. Doesn’t matter if it’s Spring or Fall, wait 4 – 6 weeks after the first (or last in the case of Fall) mosquitoes. It does not stay in their system like the monthly flea treatments. It kills once when given, then leaves the body, usually within 24 hours, and they are not “protected” but they are “treated” again the next month.

Leave a Comment

Your email address will not be published. Required fields are marked *

Get Dogster in your inbox!

Stay informed! Get tips and exclusive deals.

Let Dogster answer all of your most baffling canine questions!

Starting at just


Follow Us

Shopping Cart