Fouling scrapers work but if you've got a patent breech, an old bronze brush under bore size might work better, to clean the breech..
Make sure your ramrod attachment is sturdy/pinned, don't want a brush or a jag stuck in the bore.
When I first got started I got a jag stuck more than once, putting a dry patch down a fouled barrel. I shot it out using a little powder under the nipple. If you leave the ramrod attached, and aim straight up, the jag can be recovered easily as it comes back down with the ramrod. That won't work with a brush.
Reminded me of younger days when we shot arrows up in the air..........