Perhaps you have some fresh produce you harvested or bought from the market and have noticed some small fruit flies flying around your kitchen. Don’t wait until they land in your coffee, tea, kombucha, juice, or beer; just follow these instructions to eliminate all fruit flies and gnats from your home without any toxic chemicals.
This method is very simple and you most likely already have everything you need on hand.
The first and only piece of equipment needed is a bowl, cup, or shallow dish. The shape is not very important as long as it can hold at least a half-inch of liquid.
Next, you need a couple of ingredients that you can find in the kitchen. The first of which is a drop or two of dish soap. This is a vital ingredient, and without it, you will not kill any flies.
The final ingredient can be one of several so don’t despair if you don’t have the first one mentioned. There are a few alternatives you can use instead. Traditionally apple cider vinegar is used and it works very well!
If you don’t happen to have any apple cider vinegar and don’t feel like adding it to your pantry, you can use beer, kombucha, balsamic vinegar, wine, or even juice. Basically, any liquid that the flies want to eat! (Don’t pick coffee or tea for this. The reason they are attracted to coffee and tea is the warmth which will not last long in the trap. We want to use something they are attracted to due to smell.)
You see, the reason we end up with fruit flies in our beverages such as juice and beer is that they are able to land on the liquid and effectively float without breaking the surface tension and falling in. They ‘walk on water’ if you will because they are lightweight enough.
What they’re attracted to is the sweet and acrid fermentation smell. The more fermentation is the better. Thus vinegar is the most effective. Vinegar > beer > kombucha > juice.
When a drop or two of dish soap is added to apple cider vinegar, beer, wine, etc., the flies are no longer able to land on the liquid without falling in. The surface of the liquid breaks just as it would if you or I attempted to walk on water. Unfortunately for the flies, they are not good swimmers and will drown.
This method WORKS VERY well. The liquid should be replaced to compensate for evaporation as needed until all flies have been eliminated. Depending on how severe your infestation is this can take as little as one night, or several days. Persistence is key if your infestation is very bad, to begin with as fruit flies reproduce quite quickly.
Some people cover the dish with plastic wrap and poke tiny holes in the plastic. This isn’t necessary but the trap still works and doesn’t smell quite as strong. The flies are attracted to the smell so it’s up to you whether you want to add a plastic wrap or not.
Try it for yourself and you will find a dish full of flies after just one night!