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How long do gnats live in your house?

Alfred Andreson - June 24, 2018
The average natural life span of gnats and fruit fly adults in optimal temperatures is 40 to 50 days.

Female fruit flies are capable of mating and laying several batches of eggs in that time, allowing the fruit fly population in a home to multiply quickly.

The life span of the fruit fly is heavily influenced by temperature.

The average is 30 days
The early life stages span approximately a few days and fruit flies can complete their development in as little as week in ideal temperature conditions. Adult fruit flies can live up to 30 days.

Gnat life 
Adults live about 7 to 10 days and deposit eggs on the moist soil surface or in soil cracks.
Females lay up to 100 to 300 eggs in batches of 2 to 30 each in decaying organic matter.
Eggs hatch in 4 to 6 days; larvae feed for 12 to 14 days.
The pupal stage is about 5 to 6 days.

Conclusion:
Fungus gnat adults may live from about one to two weeks and complete one life cycle in about 18-30 days.
Moth fly adults live for about 14 days and complete their life cycle in about 7-21 days.
The average natural life span of gnats and fruit fly adults in optimal temperatures is 40 to 50 days.

Female fruit flies are capable of mating and laying several batches of eggs in that time, allowing the fruit fly population in a home to multiply quickly.

The life span of the fruit fly is heavily influenced by temperature.

The average is 30 days
The early life stages span approximately a few days and fruit flies can complete their development in as little as week in ideal temperature conditions. Adult fruit flies can live up to 30 days.

Gnat life 
Adults live about 7 to 10 days and deposit eggs on the moist soil surface or in soil cracks.
Females lay up to 100 to 300 eggs in batches of 2 to 30 each in decaying organic matter.
Eggs hatch in 4 to 6 days; larvae feed for 12 to 14 days.
The pupal stage is about 5 to 6 days.

Conclusion:
Fungus gnat adults may live from about one to two weeks and complete one life cycle in about 18-30 days.
Moth fly adults live for about 14 days and complete their life cycle in about 7-21 days.
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