To buy: $4 (was $8); amazon.com. “We had a HUGE problem with small gnats (I thought they were fruit flies!) everywhere in our house,” shared a reviewer who learned the bugs were from their houseplants. After trying the traps, they wrote, “They work wonders!” Another reviewer who called the traps “a great buy” said, “The adhesive is strong—once they land, those little suckers aren’t going anywhere.” Other than the fact that the traps work, according to shoppers, another highlight is that you can use them inside and outside thanks to their waterproof and UV-resistant design. Plus, the brand notes that the glue used on the traps is odorless and not harmful to pets or people (though the brand advises that you should still wash your hands with soap if you touch the glue). “I honestly didn’t think my plants had as [many] insects as they did, and I was pretty shocked [by] how much these traps were able to trap,” a shopper said. While the Mosqueda traps are on sale for just $0.10 per trap, make gnats and fruit flies a thing of the past around your plants, throughout your home, and even on your patio. This is $4 well-spent on your garden.