Auto Sifting Manure Forks Fine amp Mini Tine Manure Fork. Our motorized auto sifting Shake 39 n Fork has 5 8″ tine spacing optimized for sifting bagged shavings without manual agitation Mini flakes pellets cob or rice hulls sift through as fast as you scoop Our manure fork efficiently separates manure leaving only clean bedding saving you up to 1 00 per …