Let’s start with the oranges! The citrus peel contains D-Limonene, which kills ants. Simply fill a quart jar with peels from several oranges, cover with white vinegar, and allow to soak for two weeks or longer.
Need jars? Look here or try these!
When you are ready to treat ants, remove the peels, and apply the vinegar directly to the mounds. TIP: While you don’t want to saturate your plants with vinegar, you can also place the peels around plants that are prone to ant damage.
Now we will use the banana peels to make “tea” to supplement the soil. Let me first clarify that this banana peel tea is for your garden–not for indoor plants. Also, unlike the orange vinegar which you can let sit for weeks, you will want to use this natural fertilizer within a few days. You’ll need several banana peels and a gallon container. After placing the bananas in the container, fill with water and allow to sit in the sun for at least an hour and up to a day. Then remove the peels before watering desired plants.