Fer a Cheval concentrated detergent

What type of floor mop works well with a fer a Cheval concentrated floor cleaner? What kind of bristled mop?

I believe it is safe to use in an HE machine, and should have measurement marks inside the cup. I used to use the bar version on dirty and oily clothing, and it worked quite well. I tossed it in the machine without any problems. I find the main difference between the laundry packs and concentrated liquid has to do with convenience. The soap a pack contains is pretty much the same as that in a bottle, except you don't need to measure anything. But you also can't adjust the amount if you have a smaller or larger/dirtier load either. I don't mind measuring myself, and the convenience of the packs or pods for me is negligible. But if you have a significant other or a child helping out with the laundry, it can be far easier to instruct them to use one pack or pod per load than try to explain varying requirements of liquid.