Vaccine was not very effective, and I vaccinated each chick 2 times. Shipping is more expensive than the product. I wish there were better options, than this outdated vaccine for hobbyists. Producers get the better updated vaccines. Jeffers doesn't carry

I've been ordering this vaccine from Jeffer's for my chicks for several years and it's always been a positive experience. Their customer service is outstanding! Thanks Jeffer's!!!

Arrived without issue, and took everyone to the vets to do the vaccination, all went smoothly. Thank you.

The absolutely only thing I wish was different with the Merek's vaccine is I wish it were available in a small batch, but I know how it is. It's just not designed for a smaller hatch. We just followed the directions and everything went fine. No exploding

Everyone at Jeffer's is so friendly. For your best interest, they call by phone and/or email you if they have a question. They care about you and what you're ordering. Their prices are reasonable and vaccine instructions are clear and easy to administer.