If you've got a Staffie, a Lab, a Kelpie or any dog that takes the magpies personally, you know the drill.
Nose prints down the bottom half of the sliding door.
Slobber marks where she presses her face to the glass. Paw prints on the side window where she stands up to check on the courier.
You spray it, wipe it, it looks fine while it's wet, then it dries and the smears are back.
And twenty minutes later the dog's had another go anyway.
I'd been doing this with cleaning sprays and a roll of paper towel for years.
Then a friend at school pickup pulled a cloth out of her bag and asked if I'd tried KoalaCloth.
Just water, she said. No spray, no chemicals.
I thought she was having me on. She said it's got a 60-day guarantee, so worst case I'd send it back.
Here's what I found out.