Scariad flies (or Fungus flies) are 3-4mm long black flies that jump or hover over the soil surface in the greenhouse & around houseplants where compost is warm & moist. The small white larvae live in the top few millimetres of compost, attacking rooted cuttings & seedlings. Both adults & larvae of Hypoaspis (pictured) feed on sciarid larvae. One treatment of 10, 000 predators remain active for 4-5 months & treats 10 sqm or 140 30cm pots. Supplied direct from the producer. Available February-October. Delivery from time of ordering usually takes between 1-2 weeks.