Carefully Seal the Rat Entry Points –
This is first step you need to carefully implement. Rats can easily enter any hole if its head get through, so find these entry points and seal or close it. Sometimes, you may leave open the windows on your garden side, you should close it completely or use steel mesh if you want to leave it open.
Grow Pepper mint plants or Try Oil
Pepper mint plants are natural deterrents, you can grow some plants in your garden, somewhere very close to your back doors and windows. Also, you can try soaking peppermint oil to some cloth or cotton balls and place near the rat entry points, the strong smell will deter rats for a period of time.
Have a Cat as Pet at Home
If you are fond of cats, have one or two cats as pet at home. Cats are naturally predator to rats, once rats feels the presence of cats, it vanishes in jiffy.
Place Ultrasonic Rat Repellers
This is a simple & permanent of way of chasing rats from any closed areas. It produces high pitch, fluctuating noise in rat hearing range (Above 20kHZ), which is highly irritating, stressful, changes the behavioral pattern of rats and makes them flee. Just place a repeller in the rooms where you would like and make it Rat-Free-Zone. Please note, it is non-audible and safe to humans.
Keep your Home Clean & Trash Bin Away
Rats enter your house mainly in search of food, so don’t leave any unattended food, food leftovers or any open food. Also, keep away the trash bin from the kitchen, preferably place it outside your house.
Use Humane Traps
You get rat trap cages, use peanut butter as bait which is one of the favorite dish for rats. Once the you trap it, relieve it far away from your house in a dense unused areas. (Please note, other rats which are not trapped will be very careful to fall for the bait next time.)