Answer: It's really difficult to diagnose a lawn problem without actually seeing it! Based on your description, it sounds more like dog urine than anything else. Small yellow, pale green, or brown spots surrounded by dark green grass is a telltale sign of dog urine. Nitrogen in the urine can kill the grass (with resulting residue) and can darken the grass because of the nitrogen levels. Those spots are most likely to show up during hot and dry weather, or when lawns are under stress. Don?t bother with animal repellents; they?re of little or no use, according to the experts we interviewed. A motion-activated sprinkler system might help discourage droppings, but it won?t distinguish between dogs, deliverymen and welcome guests.
The remedy: Spots of dead grass will often repair themselves eventually. For a quicker fix, cut out the dead spot and fill it in with plugs cut from a strip of sod. Bring a clump from your lawn to the nursery to match grass types. Or wait until grass-planting time -- usually in the fall -- and sow fresh seed after clearing away the dead grass and loosening the soil.
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