There was a leak in our house exactly under our cat litter box, and when the cat would use the box she would kick litter out onto the wet carpet. We tried so much to get it out but nothing works. Its dried into the carpet now and hardened. Anyone ever had this kind of stain?
wash it with soap (any detergent) and brush it with brush or a old toothbrush
use this stuff called AWESOME. you can get it at some 99 cent stores or any other store. its very cheap but i use it for EVERYTHING!! i swear by it. it really works, even though it says to dilute don'tt, just pour it straight on, let it sit and clean in a bit. GOOD LUCK
Go to home depot and see if they have some sort of stain lifter that can get that out and then you might want to shampoo your carpet.
Vacuuming doesn't always restore a carpet's clean appearance. For heavily soiled carpets, shampooing is recommended, rather than spot-cleaning. Wet-cleaner machines spray and remove hot detergent solution while cleaning the carpet. Here are a few steps to get your carpet looking clean as new. Step 1-Purchase or rent a wet-cleaner machine also known as a steamer, at a hardware or grocery store. When you rent a machine, the necessary cleaning products are usually included or can be purchased at the rental store. Step 2-Vacuum the floor thoroughly. Step 3-Spray heavily soiled areas with prespray or traffic-lane cleaner. For really dirty areas, increase the amount of prespray used instead of increasing the amount of carpet shampoo. Step 4-Fill the machine's hose or reservoir with hot tap water. Step 5-Use the machine and carpet shampoo according to the steamer manufacturer's instructions. Step 6-Maximize the amount of water removed from the carpet by making a water-extraction pass with the water spray on, and then again with the spray off. Test the carpet with your hand. If your hand comes away with water droplets, extract again with the spray off; if your hand comes away damp and the carpet feels wrung out, you have extracted correctly. Step 7-Wait overnight for the carpet to dry before walking on it. To dry thoroughly, open windows and use fans.
