So, imagine my joy when I chanced upon this Mite removal product called "Ninja Robo" when I was shopping in Tokyu Hands in Singapore's Westgate shopping mall. I promptly purchased a pack of 3 Ninja Robo refills (Sgd$73), punctured holes in the plastic packaging that they came in, and placed them outside and inside one of my mite affected guqin hard foam cases. I hope it works. haha
This video shows how Robo Ninja works.