The Absorbine Hooflex Thrush Remedy Helps promote normal healing from thrush and white line disease. Easy-squeeze applicator is specially designed to reach deep into the frog where thrush organisms breed. Clear formula does not sting, stain or dry out hoof. Helps eliminate the odor associated with embedded bacteria and fungi. Does not contain formaldehyde. After cleaning the hoof, apply Thrush Remedy into clefts of frog and any holes or cracks.