We all have our way cleaning brass.
When I head to the Quigley Match I'm away from home 8 weeks a lot of time shooting the Q and the Mt 1000 as well as the Big hill shoot and I take 1500 to 2000 rounds for a couple rifles of different calibers and most generally I get them all shot empty.
The empty cases I put in a 40# cat litter bucket with a lid that is tight sealing and I usually have two buckets for the empty brass like you see in the photo with the rifle on it.
I don't presoak the fired cases, never seen a need doing this and in the bucket with a lid it keeps the cases dry and I never seen a green case doing this. When I get home I deprime the brass and soak the cases in a in hot Water er for an hour or so and reach in and lift them and let them drop back in to rinse the fouling out, I don't shake them in water this just peans the case mouth. I pour the water off and it's black
refill since again and then they get put in a wet tumbler that has 3mm ball ceramic and I use a pad of Cascade and a little lemishine and I tumbled them in a Frankford Arsenal and a Reble Supreme for an hour.
When I take them from the tumbler I rinse them in hot water twice to get the soap off and drop them on a towel to wipe them dry and just let them dry on the floor out of the way someplace till they dry.
They come out clean inside and out looking like new.
I used to use a mix of ceramic and set pins to get the primer pockets clean but I stopped doing this and just use these little balls. They work a lot better than the long angle cut ceramics do.
Here is another thing I do, and it's not for economy reasons.
I have a screen that has small mesh that will hold set pins and these little 3mm balls from falling through.
When the cases get done tumbling I empty the drums in the screen on a 5 gallon bucket and save the black water. The water will clear up in a day or so and when that bucket gets 3/4 full I don't add any more muddy water from the cleaning. In a day all that mud will settle down and I will have a clear, mostly blue colored liquid that has several loads of the cascade and lemishine diluted and when I clean the next load I just dip a coffee can in the bucket slowly and fill the tumbler.
I recycle that sometimes for a couple seasons with just pouring off the clear liquid in another bucket and cleaning the mud out of the bottom of the bucket.
This just works better than getting the commercial cleaning concentrate.