This research aims to determine the effect of Petro Gladiator® probiotic on The expansion of earthworms (Lumbricus rubellus), when it comes to the duration and fat of earthworms to determine the compost generated from probiotics and earthworms (Lumbricus rubellus). This research used a totally Randomized Design (CRD) with three solutions https://madonnay233dzv9.wikikarts.com/user