If you have a cat, you know how to clean their spray off the wall. But what if you don’t have a cat? Well, there are a few ways to clean cat spray off of walls. One way is to use a vacuum cleaner with the hose attachment. This will suck up all of the liquid from the area and then it will be easy to clean. Another way is to use a bucket and pour water onto the area and then use a plunger to suction onto the top of the bucket and pull. This will cause all of the liquid to be drawn up into the bucket and then it can be easily cleaned by using a vacuum cleaner with the hose attachment and bucket.