I use the ready to use simple green automotive forumula. I like it although the smell could be better. Remember that simple green has a ph of 9.3-9.5 so I think it would be safe for most things. The one thing that I don't like is the directions say to wet the surface first, then apply. There are sometimes like on engines where this is not possible unless I use a separate water bottle and spray it down first.
Previous to simple green I've been using meguiar's extra. I can't decide which one like like more. The simple is less expensive.
Previous to simple green I've been using meguiar's extra. I can't decide which one like like more. The simple is less expensive.