This is the mat used for the bottom of the case when raising Japanese rhinoceros beetles (kabutomushi). I bought it five months ago, but I have some left over because the beetles are gone. I bought it from a vendor selling beetles at a children's event. I don't know the manufacturer or the type of wood. It can't be used for larvae, only for adult beetles. At the event, I was told that it's less likely to attract fruit flies compared to soil. I bought it for 1,500 yen. I'm sorry, but I can't offer a discount due to the shipping costs m(_ _)m