Convenient Disposable Single Use Enema for Cats. When you need an easy-to-use, safe enema for feline patients, Feline Pet-Ema provides a convenient, non-toxic solution designed specifically for veterinary practice. Each disposable Feline Pet-Ema syringe contains 12 mL solution of dioctyl sodium sulfosuccinate 250 mg, glycerine and sorbic acid (as a preservative). Dioctyl sodium sulfosuccinate acts to soften stools by facilitating movement of water into fecal mass: glycerine helps lubricate the rectal wall. Feline Pet-Ema also helps stimulate the mucosa of the lower bowel and rectum.