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Pest Problem Guide

Bio-Balanced Fly Control Program
Fact Sheet

  1. How long is the development of the wasp inside the pupa?
    1. Nasonia - 13-15 days
    2. Muscidifurax - 17-19 days
  2. How many pupae can one wasp kill - by egg laying and/or eating?
    1. Approximately 40 (under good conditions).
  3. Do the wasps grow to be pests?
    1. No, they do not sting. Species specific - will die off when food source is gone.
    2. 30 years of USDA research as proof.
  4. How long do they live?
    1. Approximately 1 week.
  5. Do they reproduce in the field?
    1. Yes
    2. We are counting on this factor to be able to control the master breeding fly.
  6. If they reproduce, then why do they need to be put out on a regular basis?
    1. Fly reproduction:
      1. female fly can lay up to 1,000 eggs
    2. Pupae to adult:
      1. fly cycle: 7-8 days
      2. wasp cycle: 13-17 days
    3. Life cycle:
      1. fly lives 2-4 weeks
      2. wasp: 10 days maximum
    4. Range:
      1. fly can travel up to 4 miles
      2. wasp can travel up to 300 yards
  7. Where do wasps live?
    1. Being nocturnal, their habitat is below ground level, where pupae is found.
  8. Does spraying kill the wasp?
    1. Yes, if applied directly to the wasps.
    2. No, if wasps are placed near troughs and spray is used in other areas
  9. Do we have to continue to use spray?
    1. Perhaps at first because our insects do not control the adult. However, the amount of spray will be drastically reduced. We recommend the use of Solar Fly Traps to control the adult flies and parasitic nematodes to control larval activity. Spray will kill the wasps causing their effectiveness to be drastically reduced. The program is INTEGRATED. No one approach alone will do the job completely.
  10. What percentage of reduction can we expect?
    1. Somewhere between 70-95%, depending on weather conditions and other techniques used in conjunction with the wasps.
  11. Do I have to use wasps all the time?
    1. During the fly season, we have noticed different population peaks depending on the area. We treat heavier during high periods, but the secret to our program is a constant release of insects to insure continual reproduction.
  12. If I use wasps, do my neighbors have to use them also?
    1. Any biological control program will improve if the fly problem is contained at all breeding sites. However, flies will not migrate distances unless they are forced to, due to lack of water, food, breeding grounds, etc.
  13. Do the wasps die in the winter?
    1. Yes, most do, but some survive - just as do flies.
  14. How long will it take before we will notice the difference?
    1. Between 3-6 weeks, depending on when you start and what adult knock-down you are using.

Also see Treatment Schedules

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