I have looked at the Bdellidae map tab already, and it definitely gave me some great information that will be useful for locating them, such as which regions they are present in and what time of year they’re typically active.
I narrowed my search further by looking at the iNaturalist “About” tab. According to the sources I found there, Bdellidae are most commonly found in the top soil layer when there are ample prey species on which to feed.
I mostly made this post to find individuals who have seen these mites in the wild so I could ask some more specific questions about the location where they found the mites, such as what type of soil they found them in, how damp the soil was, what other organisms were present, etc.
iNaturalist has been extremely helpful in my research though, more so than any other website I have used thus far.