DOVER, Mass. (WHDH) -- Bat-hunter Mark Thomas and his dog, Scooter are busier than ever these days, chasing down bats like this one he nabbed right off the wall of a local business.

Homeowner John Muse called for help after finding a bat in his son's bedroom as he went to kiss his 6-year-old son goodnight.

"I had a tennis racket, and the thing was right near me so I just gave it a swat and the thing went down the stairs. I picked it up and the next day took it to animal control at the police station,” said John Muse.

Muse was glad to rule out rabies but then he called in Bay State Wildlife Management because if there's one bat there may be more.

"A big part of the problem with the bats this year is it’s been constant consistent heat. What’s happening is there’s just no relief. It’s hot, hot hot. They’re not cooling down at all and it’s making them real active," said Thomas.

It's not just the leafy suburbs like Dover where the bats are showing up in bigger numbers than ever. They're also in Boston, Brookline and Newton.

"We’re probably getting eight or ten calls a night between Brookline and Newton combined," said Thomas.

Brookline Health Officials warned people to make sure they bring in any bats to be tested for rabies because they may not even know if they've been bitten.

This homeowner was happy to pay $1,700 dollars to have Thomas seal up his house and install wire tubes that let the bats out but not back in.

"When you have a child, you don’t want to run the risk of having a bite. One percent of them, they say have rabies and you just don’t want to take the chance," said Muse.