My dog's DIY parvo vaccine got on fur. Is it still effective?

If most of the vaccine got under the skin, it will still be effective, assuming it has been shipped, handled, and reconstituted properly. Because they can be finicky vaccines, I always recommend having your vet vaccinate. Of course if you choose to vaccinate your pet yourself, follow the reconstitution and handling instructions exactly. Temperature, and using the vaccine right away is crucial. Also know that vaccine makers will pay for parvo treatment if your pet has been vaccinated by a veterinarian at the proper intervals. Of course, no matter how you choose to vaccinate Cookie, be sure that she stays away from dog parks, pet stores, and anywhere else that other dogs are frequently found. In fact if you can keep her in a back yard or using the same little area to urinate/defecate that is best. I recommend this for all pups until they are fully vaccinated. Hope this helps and best of luck to you and Cookie!