Spraying Your Front Door With Vinegar: A Waste Of Time Or Smart—What We Know

White vinegar is tremendously versatile. In addition to its culinary and cleaning uses, it can fix a host of other issues around the house. It's not just for indoor use, either; some people think there are benefits to spraying the outside of your doors with vinegar. The primary purpose is to supposedly prevent ants from coming into the house, and it's also suggested as a spider deterrent. If that's true, it would seem like a smart move and certainly not a waste of time. That said, there are a couple of reasons for caution. Here's what we know.

There are a number of ways to get rid of ants, and it is widely accepted that vinegar will deter them. It doesn't harm the ants, but it disturbs the scent trails they use to move back and forth between potential food sources and their nest. The acetic acid in vinegar can also be effective against spiders. It can actually be lethal to some if sprayed directly onto their body, but it works better as a repellent.

White vinegar also has antibacterial and antifungal properties, so spraying your front door with it can help prevent the growth of mold and mildew. So far, it does seem like a smart move. However, there are two drawbacks. The first is the smell, which some find unpleasant. The second is the acid content, which can cause issues on certain surfaces.

When used as a spray, it is usually recommended to dilute white vinegar with water in a ratio of 2:1 or 3:1. It can irritate your skin if you don't and could damage plants hit by overspray. Even then, there's an unmistakable smell. It probably won't linger outdoors for much more than a half hour or so, but adding a few drops of essential oils like lavender and citronella makes a difference, and can even increase its effectiveness against some insects.

The other potential problem is the material of the door itself. Acetic acid can attack finishes that are often used on wood, such as polyurethane varnish. It can also damage aluminum, copper, and stainless steel. Some experts recommend spraying a cloth with the diluted liquid and rubbing that on your front door and porch, and avoiding getting it on the hardware.

Even if your door is unaffected, spraying it with vinegar is something that you'll need to do regularly for the hack to work, especially after it has been washed or it has rained. As an alternative, there are a number of unexpected ingredients you can place on your patio that can deter insects, and you might want to try those near thresholds. Although strictly speaking, spraying vinegar on your door may not be a waste of time, the smart move is probably not to risk damaging it.