MACS,
You can make a credo out of a plastic soap dish. Drill holes in the top, fill it up with Climmax, add distilled h2o, done. I prefer the 65% type, BTW as many here do. You can do the same thing with a small tupperware container like I did. You can also take apart your standard round or square credos and fill 'em with the stuff. I think the ratio is 1# of Climmax/5 cubic feet of humi. Error toward a little more than you think you need. You'll likely use it later.