First find out the targeted predatory mite is fecultative or obligative . If it is fecultative you can try to rear it on pollen ( castor) and if it is obligative your need to do on host mites of even you can try on dust mites ....

Hi Swapan Ghosh! Thank you very much

Hi, to rear soil predatory mites (if it's the case for your species), you can have a look at how they do for Hypoaspis aculeifer (OECD 226, 2008). However, you may have to find appropriate preys...