The ultra fine nymph excelsior is perfect for new nymph housing. Hundreds of nymphs can perch in a small container, and it is easy to see the nymphs, as the excelsior is light yellow in color. The excelsior is non-molding, and a natural wood product with no chemical additives. The excelsior gives the nymphs more access to the feeder insects which in return increases their feeding.
Also for fruit fly cultures, makes enough for 10 to 12 cultures.