Applejack had just put away the last apple cart when she first heard the noise. A strange, muffled scuffling sound, like something being shuffling around inside a box somewhere nearby. She turned around, peering through the dimly-lit barn and holding her lantern aloft. "Hello?" she called out, but she got no answer.
Shrugging, she turned back to the cart. She pushed it up against one wall of the barn, and was almost out of the building when the scuffling noise came back. She turned around slowly, holding up her lamp and scanning the barn. At first, she didn't see anything odd, but then she noticed that the cart had been moved a little. Rather than being shoved against the wall, it was now lined up with the others of its kind, all of which were parallel with the wall.
"What in the hay?" Applejack took a few steps forward, but stopped as she realized that there wasn't hay crunching under her hooves. The entire floor had been cleared of straw, hay, grass, apples, apple stems, apple leaves, apple seeds, apple skins, apple cores, apple accessories, and whatever else AJ never bothered to pick up around the barn. It was as though somepony had come through and cleaned the whole place. Or something.
Applejack reached out a hoof and nudged one of the apple carts. Before her very eyes, the cart shifted back into position.
"Tidy," a voice hissed, and AJ whipped around.
"Who said that?"
No answer.
"Who's there?"
No answer.
AJ stared around at the barn and waited, but no more noises came. More than a little creeped out, she headed for the door. After quickly shutting and locking it, she made her way into the house, only to gasp in horror as she stepped into the living room.
All of her furniture had been rearranged. All of the trash had been picked up. The cobwebs were actively being swept away by a floating broom and wiped off on the edge of the trash can.
"Neat," the disembodied voice whispered again.
"W-what's goin' on here? Who is that?" AJ stuttered out, but she again received no answer. The hall closet opened itself, and the broom settled into a corner. At the sight of such bizarre things, a smarter pony would have gone galloping off to the nearest non-haunted motel, but Applejack decided to go upstairs and sleep instead. Poor stupid Applejack.
The farm pony untucked the blankets from the bed she'd never actually tucked in, and settled down on the mattress. She shuddered as the blanket tucked itself in around her. She had to pull the blankets up over her head when a brush floated in from the bathroom and started brushing her mane out.
"Just leave me alone, please," she whimpered, too stupid to simply run away from the borderline-malevolent force. The blanket pulled itself away from her, folding itself neatly on a chair, and the brush continued its assault on her hair. "What do you want with me?"
"Clean," the whispers said again. Applejack cried herself to sleep as her room cleaned itself around her.