Rats are known to be attracted to many areas of the garden - bird feeders, pet food, compost bins, and root vegetables.

Regular inspections of garden buildings and furniture are recommended as these pests often use these as hiding spots. 

Signs of a rat infestation in gardens can include small, dark droppings and gnaw marks on sheds or furniture.

Oliver Hill from GardenList has advised gardeners on how to “naturally deter rats without causing harm” as they are part of the natural ecosystem and are simply seeking food, water, and shelter. 

Ultrasonic repellers

Oliver explained that these devices emit a high-frequency sound that is unpleasant to rats but inaudible to humans. 

He said: “They can be an effective deterrent, though their effectiveness can often vary.”

Natural predators

Rats have many natural predators including birds of prey, foxes, and cats. By making your garden a welcoming habitat for these predators, you can naturally deter rats.

The gardening expert suggested that installing bird boxes for owls or kestrels might be beneficial.

Plant mint

Gardeners can use strong scents to repel rodents. Oliver suggested that this case be done by planting mint.

Peppermint and spearmint plants are the go-to options as these tend to give off the strongest odours.

Oliver claimed: “Rats detest the smell of mint. Consider planting mint around the borders of your garden to keep them away for good.”

However, mint can be invasive, so consider planting it in pots or barriers to prevent it from taking over the entire garden.

Alternatively, gardeners can soak cotton balls in peppermint essential oils before placing them around the trouble spots.

Remove water sources

As rats need water daily and are attracted to areas where they can find it, the expert suggests removing sources of water.

It's a tricky thing to do, but it’s a good idea to remove sprinklers and birdbaths from lawns. Unlike mice, rats cannot survive without water and this would be a good reason for them to keep away.

Secure garbage and compost bins

Ensure that all trash cans have tight-fitting lids to prevent rats from accessing food scraps.

For those who compost, ensure that the compost bin is well-secured. Oliver explained: “Rats are attracted to food waste. Consider using compost bins with a solid base and a tight-fitting lid.”