Article: Leafy nut grass has too many obstacles, preventing herbicides from sliding down to the "nuts" and the root. Herbicides work best early in the season, while nut grass is still young and has minimal leaves. Products that contain MSMA or products with a chemical called bentazon work best. Nut grass is a common enough problem, so typically speaking, herbicides that work against the weed will be labeled as "nut grass killers." The herbicide works best when the weed is growing vigorously, and may not be as effective if applied immediately after cutting the weed down. Wait two or more days after your last lawn mowing before applying the chemical to the lawn. Wait several days after your last watering, and do not spray the herbicide if you may get rain four hours after application or if you expect heavy rains to follow in coming days. Water will wash the chemical away, and it may not have the chance to do its job before that happens. You will usually spray diluted MSMA herbicide over your entire lawn. For instance, the instructions may tell you to mix 1.5 ounces (45 milliliters) of chemical into 5 gallons (20 liters) of water to treat 1000 square feet (92.9 square meters) of lawn. Warm season grass may only require two applications, but cool season grass may need four to eight applications before the nut grass dies off completely.
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Use herbicide before the nut grass develops five true leaves. Select an appropriate herbicide. Allow the grass to grow for a few days prior to application. Apply the herbicide during a dry period. Read the instructions on the label of your herbicide bottle to determine how to apply it properly. Repeat the treatment several times during the growing season.
Article: Browse online or in at a local retailer to find a stereo that fits your needs.  Make sure to do research on the brand you choose and confirm the quality of your choice. This list can change from vehicle to vehicle, but the basic tools include: screwdrivers, wire strippers, wire cutters, and electrical tape. You might also need a panel remover tool and factory stereo removal pins depending on your vehicle. This can be very helpful in knowing exactly which pieces of dash to remove and how to remove them. If your owner's manual or service manual does not provide the details you need, you might try looking for a Haynes Service Manual for your car.
Question: What is a summary of what this article is about?
Choose a new stereo. Gather all the necessary tools. Locate a manual on dash panel removal for your car.
Article: If your code scanner indicated a problem with the vehicle’s catalytic converter(s), you’ll likely need to replace them to solve the problem. You can find the catalytic converter on the exhaust piping beneath the vehicle. It will be wider than the surrounding pipe and often covered with a metal shield. In some vehicles, you can remove the two bolts in the flange on either side of the catalytic converter to drop it from the vehicle. In others, you’ll need to cut them out with a hacksaw.  If you cut the catalytic converter out, slip the new one over the exhaust piping in your vehicle and secure it in place using exhaust clamps to make sure it doesn’t leak. Tighten the clamps around the pipe by using a socket wrench to tighten the two nuts on the clamp. If your vehicle uses a flange with bolts instead, make sure to place a gasket between the flanges when installing the new one. You can get the gaskets from your local auto parts store. If the error codes indicate an issue with your mass air flow sensor, locate it by first finding the airbox connected to the intake pipe going into the engine. Just past the box for the air filter, you’ll find wiring plugged into the mass air flow sensor. Remove it by unplugging the wires and unscrewing the screws or bolts holding it in place.  Clean the mass air flow sensor by removing it and spraying it with carb cleaner, which you can get from your local auto parts store.  You can replace the mass air flow sensor simply by plugging in the new one and then securing it using the screws or bolts. A bad camshaft position sensor can cause a reduction in power, poor fuel economy, stalling and more. First, locate it by referring to a vehicle specific repair manual, then stick the probes for your multimeter into the two leads going into the sensor, turn it on, and set it to read resistance (ohms).  A reading of zero or “infinite” resistance means the sensor is bad and will need to be replaced. Compare any other readings to the specifications listed in the vehicle’s repair manual. If the resistance figures don’t match, there’s an issue with the sensor and it will need to be replaced. Replacing a camshaft position sensor requires specialized tools and may be best left to certified technicians. If the error codes show a problem with an oxygen sensor in your vehicle, you can locate it by climbing beneath the car or truck and looking for where wiring runs into the exhaust piping. Disconnect the wire pigtail leading to the sensor by unplugging it, then just use the appropriate sized wrench to unscrew the sensor and slide it out.  You can purchase a replacement oxygen sensor at your local auto parts store. To install the new one, connect it to the wires and then screw it back into the bung you removed the old one from.
Question: What is a summary of what this article is about?
Install new catalytic converters if they’re clogged. Clean or replace the mass air flow sensor if it causes an error code. Use a multimeter to test your camshaft position sensor if it causes a check engine light. Put in new oxygen sensors if one has failed.