If you have a sawmill close enough to you, ask them if you can fill some bags with sawdust.
When we raise our meat birds, I do this as I clean out their bedding every couple of days, so I go thru a LOT of sawdust. Sawdust mixed with lots of chicken poop is a fantastic addition to our manure piles. Black gold for the garden.
Sawmills will often let you have it for free, because they just want to get rid of it. I fill old used feed bags and fold the top over and staple them down, lol. I can get about 15 full bags in my little SUV.
"stop tooting the weed annie"