If you have a lawn, any lawn, as small as a business card or as big as a football field, you'll recognize this little problem: brown spots in the middle of your hard-earned green.

As you have probably figured out, the spots arrive after your pup wets on the grass.

The problem is the salts in urine. They concentrate in one spot and kill the grass. The trick is to get them to pass through more quickly. Accomplish this by spreading agricultural gypsum on your lawn once a year.

The gypsum helps water to pass through the soil more quickly and leach the salts away from the root zone. Brown spots bye-bye.