The relatively recent arrival has earned renown for her quiet, diligent expertise in ridding the beach community of the threatening, aggressive stingers.
"It all started in the ’80s when our son was stung and swelled up and had to have injections," she said.
"After that my husband and I went looking round the farm ... In our best year we took out 32 nests."
Mrs Dennison patrols a regular walking route of about 2km to stay fighting-fit and keep an eye-out for the yellow banded barbecue-crashers.
Her methods are simple.
Store-bought wasp-dust is loaded into the business-end of her wasping stick to target a site from a safe distance.
Then it’s "bye-bye wasp-nest".
"Wasps love red-hot pokers," Mrs Dennison nodded slowly.
"I did one place a while ago when the flowers were out.
"I zap a little powder on them to take back to their nest.
"There were heaps in there, I lost count after a while."
In fact, Mrs Dennison keeps scrupulous count with a hand-drawn spreadsheet to monitor wasp presence on her route.
"I write down what I do, where I go ... I went to Ross’s place and did 49 on his red-hot pokers, the next two days I went and only got one," Mrs Dennison said.
"There were none on the 13th, four on the 17th, then 30 on the 20th, so some must have hatched at a nest somewhere.
"Another place one day there was an excess of 150, two-three days later there was nothing, so that tells me I’m actually getting rid of them.
"I’ve got traps, too. From October until December I caught 145 queen wasps, just in my backyard. Imagine if everyone had one."
She’s exterminated hundreds of nests over the decades including six this year, before the wasps’ winter hibernation.
"It’s a hobby," she shrugged.
"I suppose the neighbours think I’m ‘the crazy wasp lady’ ... But if the nest’s too big and I can’t do it, I ring the council and they take it seriously and come and deal with it."
In fact, the sign announcing "Christene’s Wasp Hunting Service" was handmade and placed on Mrs Dennison’s front fence by her appreciative neighbours.
