They were everywhere — taped to power poles and fastened to fences with cable ties in a bid to catch your eye.
Most councils give candidates up to seven days to remove campaign posters from council property such as fences and poles after an election.
So what happens to the mountains of corflutes, T-shirts and other paraphernalia after polling day?
Labor volunteer Greg Vaughan, said the party's striking red shirts were collected and washed at the end of the campaign.
"The generic Labor T-shirts can go across state and council elections," he said.
"If you have a Labor corflute that's not specific to state or local, that can go in between."
Having non-specific signs urging people to "Vote 1" for a particular party is also a common recycling tactic.
"It means that we can reuse it," Greens volunteer coordinator Zoe McClure said.
Kristina Keneally, Labor's unsuccessful candidate for the seat of Fowler in Sydney's south-west, told the ABC some of the generic corflutes — as well as A-frames, some of which were made by the local men's shed — would be collected and stored for the next election.
"We have a couple of storage spots. Some will be in my home, and some will probably be in a storage location," Ms Keneally said.
It gets a bit more complicated when a candidate's face and a name is featured, however.
A spokesperson for former Wentworth MP Dave Sharma said his campaign had gotten good use out of its material.
Mr Sharma has stood for the Liberal Party in the eastern Sydney seat three times in the past four years.
A spokesperson fo Mr Sharma said they used T-shirts from the 2018 by-election but their corflutes were new.
Mr Sharma was defeated by independent Allegra Spender at the weekend, and the spokesperson said any corflutes featuring his face or name would be donated to local schools and childcare centres, where the white reverse side could be used to mount artworks.
Local councils are charged with making sure the posters are removed on time.
Fairfield City Council, in Sydney's south-west, wants all material gone no later than one week after polling day.
"If the signs are still on display after this time, they are considered to be advertising without consent and fines may be applied by Council," a spokesperson said.
Many corflutes, which are made of polypropylene plastic, can be taken to "suitable collection sites" to be recycled, a spokesperson from the NSW Environment Protection Authority said.
Stefan Lie, a senior lecturer and co-director of the Material Ecologies Design Lab at University of Technology Sydney, said polypropylene was a "seductive material" because it's lightweight, cheap and waterproof.
He argued the onus should not be on customers to recycle the products, and said manufacturers could consider recycling the product, too.
"If you make something, a car, or a coffee cup — it doesn't matter — and put it out into the world and you get money for it, it is your responsibility," Dr Lie said.
Corflutes can cost up to $8 each, and a volunteer for independent Dai Le, who defeated Ms Keneally in Fowler, said they were going to collect and recycle as many as they could.
"We're not a major party. We don't have millions in the bank. We pay for our own stuff," they said.
Greens volunteer Chris Maltby said he had already been approached by friends who work for the State Emergency Service (SES) to see if he had leftover corflutes.
"The SES use them for doing things like repairing skylights when there are hailstorms," he said.
Meanwhile, Lynn Ralph, who volunteered on Ms Spender's campaign, said about 700 corflutes were displayed around the electorate.
"People can either bring them back to the office. We will also go and pick them up if you want us to come and pick them up," she said.
Asked what she will be doing with her teal T-shirt, Ms Ralph had a different approach — she's planning on framing it.
"This will be a collector's item in years to come," she said.
