South Ambergris Caye Neighborhood Watch (SACNW) posted this tip on FB. (Am sure many of you are already familiar with this, but thought I'd share it anyway!)
Attention! If you have standing water in and around your property pour a little (depending on the size of the puddle 1/2 cup to a cup) vegetable oil on it. It will create a film on top of the water and stop the mosquito larva from being able to breathe and they will die. You can find inexpensive oil in some of the supermarkets in town. This will break the cycle.