Two families decided to spruce up a 'wall' they had constructed to keep a urine splashing auntie out, by adding cacti and durian husks to the structure.
The two households at Block 112, Yishun Ring Road said they have been harassed daily by an elderly neighbour for over two years.
She dumped garbage such as toilet paper, sanitary pads, dark sauce and even urine on their doors and bicycles parked on the corridor.
They attempted to deter her by installing surveillance cameras, lodging police reports, and even erecting a 'wall' with chairs and planks.
But she did not stop the harassment, Shin Min Daily News reported.
Reporters who went to down to the block also observed additional metal pieces and pipes with cacti sticking out from the 'upgraded' construct.
One of the affected residents told reporters that the 'wall' was completed on March 3 and that it was fortified over the following weeks.
The 61-year-old man said: "I recycled most of the materials used for the wall and completed it in five hours.
"I picked up the wooden planks, pipes, and various other items outside. As for the cacti, I grow them on my corridors, and they came in handy.
"I tried using durian husks for a while, but found that they stank after a few days, so I changed them to cacti instead."
The man also revealed that his neighbour is now unable to get close to the 'wall' because of the cacti, but she has continued to hurl garbage and splash liquids from a distance:
"We really hope the authorities can help solve this problem," he said.