Predatory mites may be useful in controlling some mite pests. Problematic mites include the fuchsia gall mite ("Aculops fuchsiae") and red spider mite ("Tetranychus urticae"). The female mite enters a honey bee brood cell. This applies particularly to some insect and mite plant galls. Propolis also contains persistent lipophilic acaricides, a natural pesticide that deters mite infestations. The "Varroa" mite can reproduce only in a honey bee colony. Oxalic acid is used by some beekeepers as a miticide against the parasitic varroa mite. It provides minimal protection against liquids and little or no protection from dust mite allergens. Powdered oxalate is used as a pesticide in beekeeping to combat the bee mite. Positive tests for dust mite allergies are extremely common among people with asthma. Once infected with a "V. destructor" mite, the honey bee may be damaged two ways. Infection with the parasitic mite "Demodex" is associated with the development of acne. Scabies is caused by infection with the female mite "Sarcoptes scabiei "var. The classical sign of scabies is the burrow made by a mite within the skin. The body of the house dust mite has a striated cuticle.