Yellow mealworm (YMW) can exclusively be reared in wheat bran, the addition of yeast probiotics helps to improve its growth performance and total larvae yield, helping farmers to maximize productivity and secure the financial proceeds of their operations. Actisaf Sc47 can increase the zootechnical performance of YMW when added to the feed substrate at a rate of 0.2%. Actisaf SC47 can contribute to boosting YMW larvae growth when the yeast probiotic is added to the feed substrate at a 0.2% w/w rate.