This video documents one of the techniques on how to catch a Kobito:
For those lacking the skill or time required to make a reliable trap on their own they make kits like these:
WE HAVE THIS KIT
Personally, I prefer the latter because you know everything you need is there. -tried and tested
I have a few books on all the different kobitos and exactly how to catch them. For instance, the gold kobito requires a metal detector, gold, and a shovel. You dig a hole into the ground with a shovel and then you put gold in the hole. You need to put the dirt back on top of the hole. You'll then need to go somewhere else and wait for while. Come back after about (not sure exactly), but bring your gold detector. Look for gold with it at the same spot (the gold detector helps pinpoint the same spot). When it starts to beep you dig out the same hole in the same exact area. Then you'll find the kobito or the molt (yes they molt) he left behind. The molt is gold. Also, if you do get lucky enough to find the gold kobito you'll get rich! Only if you take care of it though! This stuff is no joke. Hana just explained it all right there.
End to End Cohesion