Why I prefer Rubber Mulch

Made mine today, thanks for the idea, works great. One thing is I thought about ordering the rubber mulch on Amazon, don't they want 30 per bag that costs 5 or 6 at Lowes

the box is 8" deep. it did ok at 10yards at 18lbs, for more powerful stuff, I will see, but with those I will be at least 25 yd