I use a condor tactical belt
Condor Tactical Belt (Black, Up to 44-Inch Waist) https://www.amazon.com/dp/B003MYJTYO/ref=cm_sw_r_awd_XaSqvb0YXPQQ5
And two mag dump pouches
VISM by NcStar Folding Dump Pouch, Black https://www.amazon.com/dp/B007OZHIZO/ref=cm_sw_r_awd_9bSqvb1ADNV9C
They work great and just spray them off with a hose when they get dirty. Reason I like the mag dump pouches is because you can fold them up on your belt when not in use. There really just for all the trash I find, I have a small plastic box I put my good finds in.
I use the very same belt. It is one of the best ones I have used, but I had an eyelet or two come off. I also thought about using dump pouches for all the trash I pick up. For the good finds, I have used the following pouch, which is similar to the Mil-spec one:
Amazon.com : Tactical Belt-Utility Pouch Olive Drab : Sporting Goods : Sports & Outdoors