To make a long story short, a tree in my yard, a Dipterocarpus alatus Yang Na tree, is a gigantic tree here in Thailand has some big seed pods that fall in the early part of the year. It drop a few hundred seed pods every year. I am trying to get them to sprout for planting. If you take the pod and put it in a tank of water for use on plants in the dry season, you will not get any mosquitoes in the tank. I have a few 100 gallon tanks that used to always get mosquitoes, but with the addition of just a few seed pods, no mosquitoes. I have had an open tray of water holding the seeds for planting all summer, and not one mosquito or larva. I looks like the seed releases a tanin, as the water stains yellow-brown with a handful of seeds, so I would not suggest using it for pets. The attached image of the seed pod is from Wikipedia.
