Learn More About Rodents
Proper rodent and rat identification is one of the most important steps to getting rid of an infestation. Rats belong to the order Rodentia, which is the largest order of mammals. They are warm-blooded, grow continuously and inhabit virtually every part of the world — including every corner of Singapore.
In large numbers, they create significant destruction to property and personal items, and are associated with serious illnesses such as leptospirosis, rat bite fever and food contamination. They do not have a preference for any single habitat, instead thriving wherever shelter, warmth, food and water are available.
Various effective ways to prevent rodents in Singapore are available. Getting a rodent control expert → for professional pest control services is your best bet to eliminating rodents permanently.
Rodent Characteristics
Three rodent species are commonly found in Singapore homes and commercial properties. Understanding their lifecycle, anatomy and behaviour is essential for identifying the infestation and selecting the correct control method.
Rodents need at least 3 weeks to mature from birth to adulthood. In as little as 5 weeks, they are already sexually mature and can begin reproducing. On average they live for about one year, though those that reside indoors can have a lifespan of 2 to 3 years in a safe environment.
Baby rats weigh approximately 3 to 6 grams at birth depending on the species, and are born blind and without fur. After 6 days they begin to open their eyes, and by the start of the third week they grow their first coat of fur.
Females can give birth to an average of 40 babies a year if left unchecked. Under ideal conditions, they can start conceiving again within 48 hours of giving birth — which is why a small infestation can become a serious problem in a very short period.
Rodents have a distinctive sense of smell, hearing and sight. They are nocturnal species, usually with large eyes, and are commonly attracted to ultraviolet light. Most rodent species in Singapore have long tails and sensitive whiskers. Some species even have pouches in their cheeks to hide food.
They have an upper and lower pair of incisor teeth used for gnawing. These teeth never stop growing, so rodents must constantly chew to maintain and wear them down. Chewing on wires, pipes, wood and packaging causes significant damage in and around homes.
Rodents have an exceptional gut digestive system that is able to absorb close to 80% of ingested energy. They also practise coprophagy — by consuming their own faeces they extract additional nutrients, a survival adaptation that allows them to thrive even in resource-scarce environments.
The habitat — whether urban, rural or wild — affects a rodent's food sources. Roof rats are omnivorous but prefer nuts and fruits. However, they will eat and contaminate almost any food when hungry, and tend to stash reserves at their harbourage areas.
Norway rats will consume virtually anything: cereal, meat and whatever is available to survive. House mice prefer seeds, nuts and cereal grains, though like other rodents they will eat anything accessible. All three species can only survive approximately 4 days without food.
Rodents rarely finish a piece of food in one sitting. Instead, they chew through the packaging and take small bites repeatedly over time. Evidence of multiple gnaw marks on food packaging is one of the earliest and most reliable signs of an active infestation.
Roof rats are agile climbers prone to nesting in attics and roof spaces, creating eerie scratching, scurrying and gnawing sounds at night. They nest near accessible food sources such as fruiting trees and bird eggs, and seek warmth from building structures. DIY control at height is particularly challenging.
Rodents breed throughout the year and hide in secluded nesting areas for reproduction. They shred paper, cardboard and cushion foam to build their nests. A single pair left untreated can rapidly grow into a large infestation within weeks.
They coexist with human populations by intruding into living spaces and spreading dangerous diseases — in some cases with fatal consequences. Rodents can squeeze through gaps as small as a 50-cent coin, making even well-maintained properties vulnerable to entry through drains, pipes and wall cavities.
Rodent Life Stages
Signs of Rodent Infestation
They coexist with human populations, intruding our living space and spreading dangerous diseases — in some cases with fatal consequences. Roof rat, a long-tailed rat species prone to climb into attics creating eerie scratching, scurrying or gnawing noises. They nest near accessible food sources such as bird eggs and bearing trees, seeking warmth. Control measures for infestation from height can be challenging with a DIY approach.
Contact our rodent control services → immediately if you notice any of these signs on your property.
Gnaw Marks
Rodents gnaw constantly to wear down their ever-growing incisors. Paired gnaw marks on food packaging, wires, wood, pipes and skirting boards are a primary early sign of infestation.
Nesting Materials
Shredded paper, cardboard, insulation and cushion foam found in secluded corners, wall cavities or behind appliances indicate active nesting and an established infestation.
Droppings
Small dark droppings found near food sources, along walls or inside cabinets confirm rodent activity. Norway rat droppings are capsule-shaped; house mouse droppings are significantly smaller.
Noises
Scratching, scurrying or gnawing sounds at night — particularly from ceilings, walls or under floorboards — indicate roof rats or norway rats nesting inside your building structure.
Types of Rodents
Frequently Asked Questions
Are rodents dangerous in Singapore? ⌄
Yes. Rodents spread serious diseases including leptospirosis, rat bite fever and salmonellosis through their droppings, urine and bites. They also cause significant structural damage by gnawing on electrical wiring, pipes and insulation — creating fire and flood risks. A rodent infestation should always be treated promptly by a licensed professional.
How do rodents get into my home? ⌄
Rodents can squeeze through gaps as small as a 50-cent coin. Common entry points include drain pipes, wall crevices, gaps around utility conduits, open vents and damaged window frames. Roof rats enter from above via overhanging tree branches and poorly sealed roof eaves. Norway rats enter through floor drains and basement openings.
What are the signs of a rodent infestation? ⌄
The most common signs are gnaw marks on food packaging or wires, dark capsule-shaped droppings along walls or inside cabinets, shredded nesting materials in secluded areas, scratching or scurrying sounds at night, and grease marks along skirting boards where rodents regularly travel.
How fast do rodents reproduce? ⌄
Extremely fast. A single female can produce up to 40 offspring per year. House mice reach sexual maturity in just one month; roof rats and norway rats in 2 to 3 months. In ideal conditions a female can conceive again within 48 hours of giving birth. A small, undetected infestation can become a major problem within weeks.
What is the most effective way to get rid of rodents permanently? ⌄
Permanent control requires a combination of professional treatment and proofing. A licensed technician will identify the species, locate entry points, apply rodenticides or trapping in the correct locations and seal access gaps. DIY methods can reduce numbers temporarily but rarely eliminate the source population or prevent re-entry.
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Control — NEA Licensed & Guaranteed
Our NEA licensed technicians identify the species, locate all entry points and harbourage areas, deploy the correct treatment and proof your property to prevent re-entry — with a follow-up inspection to confirm complete eradication.