Wading Woodchips is the fourth stage in The Scratching Post.
The level starts off with a light spawning of peons. Doges, Snaches, Those Guys. The usual. Around 40 seconds into the battle, Duche appears, accompanied by Dagshund and several more Duches. After defeating that batch of enemies, another set of Duches and Dagshunds appear. This process keeps repeating (or has a lot of Duche/Dagshund sets) so bring some strong units!
Stall with Wall Cat, and build your Wallet and Worker cat. At least 1 minute into the battle, Dagshund, appears quickly followed by several Duches. Then a second round of Dagshunds and Duches come out. When the second round is finished off, you should be able to knock out the base quickly.
You can also beat the level with a few meatshields and a stack of strong Paris Cat.