*sigh* The type only matters if you are trying to kill them off one by one, usually using the pharmaceutical cartel's assorted and no doubt expensive drugs. So who do you imagine would want everyone all wound up about which type and size each one is?
If you zap (and do the Wormwood at least) you will kill them all, especially if you do it daily for the 2 weeks recommended with the cleanse. New ones hatch out everyday, so once is no where near enough. So what 'kind' they are is completely irrelevant. Do you need to know what type of spider it is before you step on it?? I hope not. Just squish it already!