Big bags are popular, fertiliser, sand, seed, you name it it can be bought in an empty bag.
Emptying an empty bag is a different story.... but now there is EMPTY BAG™ a easy fast and safe method to empty a big bag.
from Stuff article Dec 2016 from very frustrated farmer:
"In the past, the bags had a clever configuration which allowed you to open up a hole at the bottom and direct the flow of fertiliser into your spreader and then close the flow off with a draw string at your discretion.
To my surprise, the newly purchased bags did not have a hole. I rang the fertiliser company and asked 'where is the hole to let the fertiliser out'?
I could not believe it when he told me that the bags no longer had the hole for health and safety reasons. I was told I would have to cut a hole myself because for health and safety reasons, the bags were now single-use ones.
Because my fertiliser spreader only holds one-third of a 500kg bag, it was not as simple as just stabbing a hole in the bag and letting it all flow out.
I had to cut a hole one-third of the way down, angle the heavy bag on the tractor forks and physically scoop the fertiliser out, which is way more riskier method than before as I had to use a knife and climb up on the bike to do "