Heavy rain and flooding destroy rat burrows, forcing rodents to seek shelter in homes, roofs, and wall cavities. Learn why wet weather increases rat infestations and how to prevent them from invading your property.
Rats In Rubbish During Rains
Why Do Rats Invade Homes After Heavy Rain?
1. Floodwaters Destroy Rat Burrows
- Brown rats (Rattus norvegicus) burrow underground and lose their nests in floods.
- Black rats (Rattus rattus) live in trees but move indoors to avoid wet conditions.
2. Rats Are Strong Swimmers
- Unlike other small animals, rats can swim for long distances to escape flooding.
- They climb gutters, pipes, and walls to reach dry, safe spaces.
3. Indoor Areas Provide Food & Shelter
- Flooded landscapes reduce food sources, pushing rats into homes for pantry goods, pet food, and garbage.
- Roof cavities, walls, and sheds offer warmth and protection from predators.
How Rain Increases Rat Populations
1. Increased Food Availability
- Post-rain plant growth provides seeds and vegetation for rats.
- Pantries, bins, and compost heaps become easy targets.
2. Peak Rat Breeding Season in Autumn
- Heavy summer rains create ideal conditions for breeding just before autumn.
- Female rats have up to three litters per year, each with 5-8 pups.
3. Fewer Natural Predators
- Floods reduce populations of snakes, owls, and feral cats, allowing rat numbers to surge.
- Without predators, rats breed unchecked, increasing infestation risks.
Signs of a Rat Infestation After Rain
- Scratching and scurrying noises in walls or ceilings.
- Droppings near food storage areas or in corners of rooms.
- Gnawed electrical wires, wood, or plastic from rat teeth.
- Chewed food packaging in pantries or bins.
How to Prevent Rats After Heavy Rain
1. Block Entry Points
- Seal holes larger than 6mm in walls, doors, and vents.
- Use metal mesh or weather stripping to cover gaps.
2. Secure Food & Waste
- Store food in airtight containers and keep pet food indoors.
- Close garbage bins tightly and remove fallen fruit from yards.
3. Remove Outdoor Nesting Sites
- Clear piles of wood, debris, or loose timber near your home.
- Trim overhanging branches that provide roof access.
4. Use Professional Rodent Control
- DIY traps cannot keep up with rapid rat breeding.
- Professional baiting and exclusion offer long-term protection.
Why Choose Peter the Possum & Bird Man for Rat Control?
1. Expert Identification & Removal
- We locate rat entry points and nesting areas for targeted removal.
2. Pet-Safe Baiting & Proofing
- We use lockable bait stations to protect pets and wildlife.
3. Long-Term Prevention Strategies
- Our methods stop rats before infestations worsen.
Final Thoughts on Rats & Rain
Floods and heavy rain force rats into homes, where they breed and thrive. Early prevention is key—if you hear scratching, see droppings, or notice signs of rats, act fast to prevent an infestation.
For professional rat control in Brisbane, contact Peter the Possum & Bird Man today.
