I was staying in a medium-sized house in a fairly tucked away village; surrounded by jungle and rice fields. Over the 3 months that I stayed in this house, I saw iguanas the size of my arm, several snakes cruising in the backyard, and plenty of ants that like to eat bamboo and other wood-stuff.
That being said, most birds stay away from people and is uncommon for them to just chill in these open spaces. As for insects, it's not THAT big of an issue.
Sometimes there are these little bugs that fly into houses with lights on, right before it starts to rain -- these can be super annoying.
Everything else is manageable. Some 'businesses' like to use chemical sprays around the area to avoid having mosquitoes and such fly inside. But the use of chemicals isn't entirely environment-friendly and can make plants die off pretty quickly.
Locals don't use chemicals in their own homes and is simply a 'luxury' that Westerners have both imposed and expect from certain places.