Over the past three weeks, the owner of Three Hives Beekeeping has collected two or three swarms per week, including one in Peter Street and another on Monday afternoon at the entrance to Myer on Baylis Street.

"It's not common in those areas, but a lot of colonies are in the trees, so they're metres high and we're not aware of them there," Mr Roberts said.

The Baylis Street swarm, Mr Roberts said, was a simple task to remove.

"I was called by a lady who was actually from Sydney, I think she was having a coffee nearby and she said she could see a swarm on the gutter," he said.

"When they swarm, it's the queen that leaves and takes 15,000 bees with her [to] scout out a new home.

"Once you've got the queen in the box, the rest will follow so even though it looks dramatic it's really not."

Despite appearances, Mr Roberts said he arrived to find the bees were quite under-control.

"They are generally fairly placid when they have no hive to protect, about 90 per cent of the time they are," Mr Roberts said.

The Baylis Street bees, now collected, will be the latest hive to add to Mr Robert's host-to-hire program.

Across Wagga's backyards since 2016, Mr Roberts has been setting up and maintaining hives in what started out as a small enterprise, but has since grown enormously.

"The reason the business was called 'three hives' was because that's what my wife agreed to back in 2016," he said.

"She said I could have three hives, but that ended up being 20 pretty quickly just by collecting swarms."