"Te Awamutu is not a junkyard - please take care and pride."
One day he filled three rubbish bags in one hour.
"It makes me angry. People might kill beautiful birds by littering.
"It's not safe to throw rubbish."
He says he'd like to see more bins around town and wants to organise a clean-up event.
Corey is supported by ConneXu, a local organisation that supports adults with an
intellectual disability in a range of different circumstances and in a variety of ways.
ConneXu operations manager Kate Shaw says Corey is an asset to Te Awamutu.
"Corey's really proud of the community he lives in," she says.
"For him, it's really important that the town is clean and beautiful."
She says the stigma around people with disabilities can sometimes be negative.
"People with disabilities don't take from the community.
"They actually give back and strengthen the communities they live in."
ConneXu's mission is to collaborate with people to create and sustain a life that is meaningful to them, she says.
"Our vision is 'communities where people are empowered'."