How to prevent mosquitoes from breeding?
How to prevent mosquitoes from breeding/ lay eggs? Here’s the cheapest way of preventing survival of mosquitoes.
We cannot stop mosquitoes from laying eggs at any stagnant water in drains/ponds or water collected in waste pails, tanks, tins, used tyres etc. etc. However, if you have fish inside the tanks/containers then there should be no problem. What about other than tanks such as drains?
A simple and very economical way to destroy the mosquitoes’ eggs and not let them hatch into larvae is to put in few 1 cent copper coins into the tanks/containers and it will solve this problem.
According to Japanese Research Scientists, they found the mosquitoes eggs will be destroyed by a kind of mineral discharge from the copper.
So try it by yourself and even the small snails also will not visit the containers (with copper coins) collected with stagnant water. You will observe the water collected in the containers will be very clean and clear.
Taking care of the environment. Together, We Care – by Malaysia Forest Figure

I know about this method some times ago. It works
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