Durvet Chlorhexidine 2% Solution is a topical, aqueous antibacterial solution that is great for treating horse and dog injuries on superficial cuts, abrasions and insect stings. This solution continues working 2 days after application to fight infection. To use, simply rinse the affected skin area with the solution, remove excess solution and then pat dry with a sterile gauze or sponge. 
Details: 

Effective against gram-positive and gram-negative bacteria
Formulated specifically for horses and dogs