If you have been searching for “20 yard dumpster rental cost in St.Louis MO,” you will find the most reasonable prices from team at Scapers LLC. 20 yard dumpster is only $315.00 and includes a 7 day rental period, drop off and pickup services, hauling and disposal, and emergency response. 20 cubic yards translates to about 6 pickup truck loads. Call to check for availability!