I make do with whats at hand, if I have patches I use them or whats handy.
I had thought I had a squeeky clean bore but it still had copper fouling streaks that could be seen at the muzzle so I made a temporary home made electro bore cleaner from a D-cell flash light, steel rod, electrical tape, rubber plug, ammonia cleaner, couple lengths of old speaker wire.
All sorts of nasty brownish/black froth boiled out the muzzle, the steel rod was throughly coated with the nasty slime.
It dident tighten the groups that much but the bore allot cleaner in ther now.