During the summer months it’s hard to keep wasps and flies out of the house. Warm weather means open windows and tempting scents that draw these pesky pests indoors.

Wasps get bolder later in the season too and flies are always on the hunt for food, making homes an easy target. While chemical sprays might seem like a quick fix, homeowners worry that they can be harmful to pets, kids and the environment. But there is an effective alternative - the Repepro Ultrasonic Pest Repeller now has 36% off on Amazon, offering reliable pest protection for £15.99. 

Natural methods like keeping food sealed, using fly screens, or placing citrus and essential oils around the house can also be surprisingly effective, but using an Ultrasonic Pest Repeller can really keep them a bay.

Using unique three-layered bionic wave technology, the Reprepro Pest Repeller emits ultrasonic pulses designed to disrupt the neurological, auditory and immune systems of common pests. While this may sound complicated it makes the environment less hospitable for a varitey of pests including flies, wasps, mice, rats, cockroaches, ants, moths and more. 

Designed with safety in mind, the repeller is non-toxic and safe for use around people and pets. The £15.99 set includes four plug in devices that can be used around the home. 

Each unit covers an area of up to 115 m², but for best results, one should be used in each room as the ultrasonic waves do not pass through solid objects or walls. Installation is simple - just plug it into a power outlet and it begins working automatically and wait a few days for the device to become fully effective.

Alternatively, Amazon also sells Citronella oil that can be sprayed around the home to deter unwanted mini beasts from settling in at home. Affordable and cost effective, prices start from £9.99. 

Elsewhere, B&Q has the GEEPAS 16W Electric Bug Killer for mosquitoes, wasps & flies for £24.99 that uses ultra-violet light to attract and destroy bugs. At Robert Dyas, the Magnetised Mesh Bug-Free Door Curtain helps prevent anything getting inside in the first place. 

Shoppers who have already invested in the Ultrasonic Pest Repeller have given it a 4.4 out of five-star rating on Amazon. One buyer said: "Pack of 4, great value for money. We bought them mainly to keep the flies away. It works well. There is no fly in our rooms now as there are a lot of flies outside in our garden when the weather is hot. Highly recommended! Convenient to use, lightweight too. They are brilliant."

Another added: "It's really helpful! My home used to have small flies because it is close to the garden, but with this device, flies are going away. I have a cat and it doesn't affect him so it is very pet-friendly as well! Highly recommend for summer, good for people who hate spiders, mosquitoes and small flies!"

A third simply said: "These have worked perfect NO MORE FLIES! Would definitely recommend.This is the best of the best."

Some buyer were less impressed however, with one three-star review saying: "Was OK but after one day use one of the Ultrasonic Pest Repeller has stopped working."

Overall though, buyers seem to be impressed with the pest repellers overall performance. Another five-star review said: "The Ultrasonic Pest Repeller has been remarkably effective in keeping our unwanted critters away. I particularly appreciate its safe design, ensuring that neither humans nor our two beloved dogs are harmed while it deters everything from mice to moths."