Snails are hermaphrodites ,they ve both male and female organ ,which means they all lay eggs,snails lay 200 to 400 eggs 2-4times a year depending on the specie, imagine rearing 100snails and each lays 300 eggs in a year ,300×100=30000 ,and u decide to sell each for 300naira ,you will be getting N9m in a year ,minus 20% mortality rate ,you will still ve N7.2m left ,meanwhile the 30000snails would ve multiplied itself and it goes on and on