Rodents and cockroaches are moving indoors in greater numbers in Rotorua, driven inside by cooler weather.
Pest controllers say a farm shed on one farm in the district was infested with more than 30 mice.
In Hawke's Bay and Auckland there has been an increase in the likes of white-tailspiders, flies, ants and cockroaches because of the humid weather throughout summer but Rotorua pest controllers say because the weather hasn't been as warm, they've only seen an increase in rodents and cockroaches.
Bay Pest Services owner Chris Brunel said he had noticed an increase in cockroaches this year.
Cockroaches were a problem for Rotorua most years but in one home, within 10 minutes of treatment, between 30 and 40 cockroaches were found, he said. He had also had a few calls to spray the exterior of homes for spiders.
Rotorua Pest Control owner Neil Olive said he hadn't been very busy but had noticed a slight increase in rodents and cockroaches around this summer. "We aren't flat out ... flies have been non-existent this year," he said.
However, he said a farm he had visited had an infestation of mice in a shed. "It's been quite a mild summer. The grass is growing and there is plenty of food and opportunities for mice to breed. One farm went crazy with them. It has to be because of the milder weather," he said. "We've had a few cockroaches."
Mice were opportunist rodents and the best way to keep them away was to keep lawns mowed and gardens weeded, Mr Olive said. "It's just natural for them to come inside looking for food."
As for reducing cockroach numbers, cleanliness and checking boxes during moving helped, he said.
"It's about human movement with cockroaches ... Keep cupboards clean and check things before you move. Most people don't even realise they have got them until they are infested."
Getting rid of cockroaches wasn't as easy as letting off a pest bomb, Mr Olive warned.
"You'll never get rid of them with bombs. You're just wasting your time. We are trained and know what to do."
Owner of Rotorua's JAE Pest Control Peter Slappendel said he had dealt with a couple of wasp nests and sprayed for spiders.
