For additional wasp repellent, we recommend filling the included scent bowl with natural essential oils, such as peppermint, lavender, or eucalyptus (not included). Wasps dislike this scent. The unique, patented scent bowl makes the fly swatter/wasp repellent versatile. Insect problems occur outdoors during the summer months - whether at barbecues or cake buffets. Inside the house, flies and wasps usually disturb in the kitchen or at the dining table. For such issues, simply place the fly swatter/wasp repellent now. To repel flies, you can also hang the device from the hanging ring on its underside.