Rodents are just the same as any other wild creature. If they find a good source of food, they will go for it. Unfortunately, the food source the rodent is going for could include the plants in your garden. Several options exist for getting rid of these pests but bear in mind that as long as your garden plants are easy to get to, you will have a reoccurring issue with rodents. Therefore, your best course of action is to deter the rodents.
First thing to do is identify you have a rodent problem. Look for evidence of rodent damage such as gnawed stems and leaves. Droppings or shredded nesting material may also be present within the garden or in any outbuildings such as a shed or garage. It's important to identify the pest in your garden so that you know the best way to handle the problem.
The following will help you to identify any rodents or similar looking animals that you may see in your garden.
If the creature has a long pointed nose and tiny eyes it is not a rodent but a very useful Insect Eating Shrew.
The minute Harvest Mouse which eats grain and insects has small ears, a blunt nose and a long tail used for grasping.
Big black eyes, large ears and a long tail denote a seed eating wood mouse, also known as a field mouse.
If you come across a large rodent in the garden it is likely to be a brown rat which eats anything. Though the brown rats fur is occasionally black, its small ears and thick scaly tail which is shorter than the head and body distinguish it from the black rat
The black rat has large ears and a tail longer than its head and body.
Creatures with a short tail, small eyes, rounded nose and barely visible ears identify the vole.
To prevent any further damage by making your garden rodent-proof. Fences around your garden may prevent access to the plants but rodents can easily chew through wood or burrow underneath the fencing. Choose materials such as hard plastic or metal that the pests are less likely to damage. Scatter crushed oyster shells or gravel around new plantings. These materials will discourage rodent pests from nibbling on your garden plants. Electric powered rodent repellers are excellent, they omit an ultrasonic noise that rats and mice can't stand but humans can't hear. Clean up plant debris that could invite nesting sites. Delay winter mulching until after a hard freeze. Protect tree trunks with a tree guard or encircle them with hardware cloth, making sure protection extends a couple inches below the soil surface and a foot or more above the soil surface
Set Mouse Traps and place them at areas where the rodents are entering the garden. Look for tracks and droppings as this will help you locate these areas.
There are other Products Available to kill rats and mice but these must be used exactly as instructed and with caution