Your Halloween Pumpkin Could Be a Rat Magnet, Pest Expert Warns

13 October 2026

Over 500,000 pumpkins are sold in Ireland each Halloween, and leftovers could invite rats and mice indoors…

Cork-based pest control company Catch A Pest is warning Irish households that carved pumpkins left outside after Halloween could be an open invitation to rats and mice. Over 500,000 pumpkins are sold in Ireland every Halloween, and many sit on doorsteps, windowsills and garden walls long after the trick-or-treaters have gone home. Once the candle goes out, a softening pumpkin becomes an easy meal for hungry rodents.

Stephen Prout, Managing Director of Catch A Pest, says that:

A pumpkin left on the doorstep or thrown in the garden is a free feed for rats and mice. It’s soft, sweet and sitting right beside your front door, which is the last place you want to be drawing rodents. We see the same thing every year once Halloween is over.”

Rodents Are Already on the Move

When it comes to rodents, Halloween falls at the worst possible time. The clocks go back on Sunday October 25th, and as evenings darken and temperatures drop, rats and mice move indoors looking for warmth, food and shelter. A rotting pumpkin near the house gives them a reason to come close, and small gaps around doors, pipes and vents give them a way in.

It isn’t just pumpkins, either. Bags of leftover sweets, open bins and cardboard boxes of decorations all offer rodents food or nesting material at a time when they’re actively looking for both, making residential pest control all the more important. Stephen adds that:

Rodents don’t need much encouragement at this time of year. Once a mouse finds food beside your home, it’ll look for a way inside, and it can squeeze through a gap about the width of a pencil. Removing easy food sources is the simplest thing you can do to stay pest-free through the winter.”

How to Make Your Pumpkin Last

There are simple ways to keep a carved pumpkin looking its best up to Halloween, so it spends less time rotting on the doorstep:

Time your carving: An uncarved pumpkin keeps for weeks, but once carved it can start to soften within a few days, so carve as close to Halloween as you can.
Give it a vinegar rinse: Soak the carved pumpkin for around 30 minutes in a bucket of water with a few splashes of vinegar, then leave it to dry. This helps kill off the bacteria and mould that speed up rotting.
Keep it moist: Carving exposes the flesh to the air, so mist the inside with water regularly to stop it drying out.
Swap candles for LEDs: A candle’s heat dries the pumpkin out from the inside, while an LED light won’t.
Find a sheltered spot: Strong sun turns pumpkins mushy and heavy rain encourages mould, so keep yours somewhere dry and covered.

Once your pumpkin starts to soften or show mould, it’s time to get rid of it properly.

How to Keep Your Halloween Rodent-Free

Using his years of experience in rodent control, Stephen has shared his top tips for a pest-free Halloween:

Don’t leave pumpkins out for days: Bring carved pumpkins in or dispose of them within a day or two of Halloween.
Use the right bin: Put leftover pumpkin in your brown bin or a closed compost bin, never an open compost heap.
Eat the insides: Cook the flesh and roast the seeds rather than leaving pulp lying around outside.
Seal up the sweets: Store leftover treats in sealed containers, not open bags or bowls.
Pack decorations in plastic tubs: Rodents chew through cardboard easily and use it for nesting.
Seal gaps before the clocks go back: Check around doors, pipes, vents and skirting boards, and fill any cracks.
Act at the first sign: If you hear scratching or spot droppings or gnaw marks, contact pest control early, before a small problem becomes an infestation.

How the Data Was Gathered

Pumpkin sales figures come from Fingal County Council’s Zero Waste Halloween resource (2024), which reports over 500,000 pumpkins sold across Ireland each Halloween.

About Catch A Pest

Catch A Pest is a Cork-based pest control expert offering comprehensive pest control services to both commercial and residential properties.