There are several papers about the biology of the stored-food mite Tyrophagous putresencitae that can be useful for you. These are the links to download the PDF´s papers.
Acceptance of buckwheat grain as a food by Tyrophagus putrescentiae (Schr.) (Acari: Acaridae) http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.510.6104&rep=rep1&type=pdf
Effects of different flours on the biology of the prey Tyrophagus putrescentiae (Schrank) (Acarina: Acaridae) and the predator Neoseiulus pseudolongispinosus (Xin, Liang and Ke) (Acari: Phytoseiidae)
Plant oils have acaricidal effects againts several species of mites. Plants may provide an alternative means of dust mite control because they constitute a rich source of bioactive chemicals. Because of this, much effort has been focused on plant extracts or phytochemicals as potential sources of commercial pest control agents. The essential oils of herbs have been popularly applied commercially. For instance Rim and Jee (2006) evaluated 6 different herb essential oils, which were chosen to use as repellents and to get easily near around, namely, pennyroyal, ylang ylang, citronella, lemon grass, tea tree, and rosemary. These are generally known for different properties, e.g., as repellents, antiseptics, and anti-stress agents. This paper describes a laboratory study on the acaricidal activities, and presents the results of chromatography/mass spectroscopy (GC-MS) analyses of pennyroyal essential oil.