German Cockroach Lifecycle
A female German cockroach lives about 200 days and and in that time will produce approximately 4-6 egg cases each containing 30-40 eggs.
Each female can produce up to 240 nymphs (future adult cockroaches). The eggs hatch in 28-30 days and the nymphs develop in 40-125 days.
Which means even if you kill every living roach in your house, 40 days later you could have the same lifecycle starting again.
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