Lucas Solvent

For the first time I used Lucas Solvent and Sonic Cleaner to clean three bullseye pistols. It did a pretty good job, but I am wondering if the used cleaner is good for anything else. Should it be discarded, filtered and reused, stored separately and keep using until it doesn't clean anymore?

I keep the once used in a different bottle and use until it doesn't work anymore also add some new to the old and use that way too.  Good stuff.