Biological controls are fungi and bacteria used specifically to counter harmful garden species of pests and fungi. Keeping an indoor garden free of bugs can be challenging but with the right tools, putting insects in their place is a breeze. Pests tend to show up, even when we least …expect them. Experienced gardeners and green thumbs alike know that dealing with bugs is not a one time issue, rather something that growers have to be constantly aware of, just like water, temperature, and light. HTG carries several biological controls to put to use in your garden.