The British, while in India (the good old days) did similar things. Wrapping ammo in pig fat treated waxie papers, dipping bullet tips & baynets in pig blood or fat, etc. Also soaked hanging ropes with pig fat. Throwing pig waste, fat, blood, etc into threating mobs of Muslums, worked like a charm.
Can also thank out Muslum brothers for the US to develop the famous Colt 45 1911 model handgun. Developed to use against the Moro muslum tribe members. Moros would used a very strong native drug, sort of like a tricked out meth, when charging army troops. Were hard to stop until the powerfull Colt 45 (later upgraded to a 1914 model..both models used even today with great results) was designed and used. Stopped any charge DEAD in it's tracks. Kept peace on the Philippines for a very long time.