Fox Valley Day-One Formula 20/50 for Baby Squirrels

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  • Fox Valley 20/50 - 1lb
  • Fox Valley 20/50 - Back
  • Fox Valley 20/50 - 3.5lb
  • Fox Valley 20/50 - 8lb
$13.95 - $95.95


The best option for baby squirrels from 4 weeks of age through weaning. Fox Valley Formula 20/50 is also ideal for flying squirrels, rats, and mice. This rehabber-approved powdered milk formula produces better weight gain, fewer digestive problems, and better acceptance than other formulas. 

Fox Valley Formula 20/50 mixes easily, smells wonderful, and there is no need to supplement the formula with any added cream, yogurt, or probiotics.

Fox Valley Formulas

Henry’s is proud to partner with Fox Valley Animal Nutrition, a leading manufacturer of formula milk for endangered and orphaned animals. Fox Valley uses only high-quality human-grade ingredients to create milk replacers that closely match the specific composition of the mother’s milk in order to assure proper nutrition and growth.

Mixing and Storage Guidelines: Mix 1 part powder to 2 parts warm water and feed 4 to 6 times a day. To determine the correct amount, see guidelines below or visit the Baby Squirrel Care Guide. Gradually decrease both the quantity of milk formula and number of feedings per day as weaning approaches (around 16 weeks).

  • Add powder to warm water (approx. 100°F). 
  • Blend until powder is dispersed in water. 
  • Feed soon after mixing.  
  • Mixing directions are based on volume, not weight, measurements.
  • Store any leftover formula in the refrigerator and feed within 24 hours. 

Unused formula powder should be stored in a cool dry place, preferably the refrigerator, and is good until the expiration date printed on the back of the bag.

7% Feeding Rule: Weigh the baby on a scale in grams; multiply that number by 7% (0.07) to determine the number of mL’s to feed per feeding. You may need to start with smaller feedings at first and work up to 7% after a few feedings, especially for emaciated babies. 


Amount to Feed*

How Often

4-5 weeks

6-9 mL

Every 4 hours

5-6 weeks

10-12 mL

Every 4 hours

6-7 weeks

12-14 mL

Every 5 hours

*Rough estimates for standard size Eastern Grey Squirrels. Feeding amounts should always be based on the weight of the baby.

Made in the USA.








473 kcal per 100 grams of powder. 1 cup weighs approximately 119 grams.

Guaranteed Analysis:

Crude Protein

Min. 20%

Crude Fat

Min. 50%

Crude Fiber

Max. 0%


Max. 9%


Max. 5%

Ingredients: Vegetable oil, casein, dried whey protein concentrate, dried corn syrup solids, dicalcium phosphate, calcium carbonate, lactose, potassium chloride, magnesium sulfate,  L-Arginine d i, -methionine taurine, sodium chloride, dipotassium phosphate, mono and diglycerides, chlorine chloride, vitamin E supplement, vitamin A supplement, vitamin D-3 supplement, zinc sulfate, ferrous sulfate, riboflavin supplement, calcium pantothenate, niacin supplement, manganese sulfate, copper sulfate, vitamin B-12 supplement, thiamine hydrochloride, pyridoxine hydrochloride, folic acid, calcium iodate, biotin, sodium selenite, natural and artificial flavors added.

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180 Reviews

  • 5

    Posted by Miranda on 27th Oct 2023

    Helped us rehab a baby squirrel. Shipped quickly.

  • 5
    Fox Valley Day One 20/50

    Posted by Jen Leon on 26th Oct 2023

    This product works the best with all stages of squirrel development! It’s a superior product!

  • 5
    Fabulous Fox Valley Day One Formula

    Posted by Carla on 5th Oct 2022

    Greatest stuff on Earth. My rescues thrive on this and love the taste.

  • 5
    Day One for opossums, squirrels, etc

    Posted by Helen on 3rd Oct 2022

    Excellent product. Fast shipping.

  • 5
    Highly recommended

    Posted by Genivieve on 12th Sep 2022

    Works great. I had started the baby squirrels with the recommended yogurt heavy cream egg etc mix. At first they did not like the formula so I added in a couple of drops of heavy cream, then pulled it after a few days. The babies are growing and thriving. Fur is coming in glossy and super smooth.

  • 5
    Baby squirrel food

    Posted by Deborah zaleski on 12th Sep 2022

    I had a couple of 4 week old baby squirrels that fell from a tree and mom wouldn't take them back. I ordered this and it came quickly. The babies loves it

  • 5
    Henry's Healthy Pets Service & Shipping

    Posted by Julie on 1st Aug 2022

    I've ordered formula & nursing supplies from Henry's quite a few times. The shipping is reasonably priced & delivery times are fast. Love them

  • 5
    The best out there!!

    Posted by April on 14th Jul 2022

    This product has been a game changer!! I found Henry's after researching why my little guys tummy was so upset (using the other stuff) and once I found this website and read and did research I ordered and I'm telling you that even after the FIRST feeding, his tummy felt so much better! My Chiperton LOVES his Henry's formula AND his HEALTHY BITES!!! Anytime people ask me. I ALWAYS point them over here!!!

  • 5
    Baby squirrel food

    Posted by Sierra French on 5th Jul 2022

    She loves it so we love it

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