Inoculating loop. One of the most important accessories for home mushroom cultivation is an Inoculation Loop. Otherwise known as a smear loop or micro-streaker, this device is perfect for gently scraping the spores from mushrooms and dropping them onto agar plates. Available in 50mm and 70mm versions, this metal tool is cut out for the more delicate mushroom-related tasks. Temperature resistant up to 1200°C.