Hi.
Yes, to both questions.
  1.    It has been proven in laboratory tests that mineral oil blocks the
respiratory system of bee mites causing their death by asphyxia. Reported in early
FGMO test results years ago.
   2.  Yes, mineral oil (fogging and emulsion treatments) places a delicate oil
film on the surfaces of the bees causing the mites inability to adhere to the body
of the bees. FGMO works better than sugar powder because it is applied in a more
uniform manner, more cost effective and longer lasting than sugar powder.
Best regards.
Dr. Rodriguez