About D.f. crosley

learn more about d.f. crosley and our products

We Are Specialists

We are proud to be Champions Proven Choice in Defense with our 3-step process that provides protection for your animals. We use ingredients formulated with natural antimicrobials for fungal and bacterial protection for skin and hooves.

We Test What We Sell

Since 1994, we have helped thousands of animals achieve protection. We have tested our products on thousands of animals to determine the best and safest products available.

We Support What We Sell

We stand behind every bottle we sell. Contact us with any questions or concerns.


David F. Crosley is an experienced formulary chemist, known for building businesses based on environmentally sound technologies.  Born and raised in Indiana, David became a student athlete at Arkansas State University and graduated with a Bachelor of Science degrees in Biology and Chemistry. Upon graduation, David completed active and reserve service as a Medical Service Corps Army officer. David worked initially in industrial processing and chemical manufacturing as a formulary chemist. David recognized the opportunities of change and innovation when America turned an environmental corner in 1970. The E.P. A. established new guidelines to reduce air and water pollution.

Using entrepreneurial insight and formulary experience, David founded his first company Challenge Inc.  David introduced a process incorporating polymer barrier coatings to replace solvents that became an EPA recognized BACT (Best Available Control Technology) for decorative painting. As a result, Challenge led the way to eliminate over twenty million pounds of VOCS (Volatile Organic Compounds Solvents) from entering the environment annually in the automotive industry.

Over the years dozens of additional environmentally impactful technologies were introduced in metal surface treatment including innovations in corrosion protection, non-chrome polymer seal rinses and phosphate free conversion coatings for metal pretreatments prior to paint. David’s environmental efforts carried over to the health of dairy cattle.

In 1994, David pioneered the use of patented safe acids as a chelant for Copper and Zinc ion antimicrobials used to foot bathe dairy cattle to control hairy hoof wart and foot rot. The technology reduced copper and/or zinc material by 80% while still successfully killing and controlling many forms of bacteria and fungus.

Today, David continues with pioneering strategies focused on prevention. He continues to develop environmentally sound and exceptionally effective formulas that use natural antimicrobial plant extracts to keep people and animals healthy. Today’s evolutionary products have been defined by species specific chemistry using nature’s own essential oils and health inducing ingredients.