I've read that females tend to cause more turf problems. The composition of the urine is somehow more destructive and because they squat, the urine is concentrated tightly in one spot.

I think it was my post you were referring to. I have a TTTF lawn with some remaining other fine fescues that preceded my TTTF overseeding.

My 7 month old TTTF doesn't seem to be harmed by the pee now and instead just gets a big flush of top growth. Right now nothing at all is growing in the burned spots, which are about 2-3 inches in diameter.

2-3"? That must be nice. What kind of dog? I've got a Husky that (bless her soul) goes in one area of the lawn. I've got some spots that must have received double duty because they're almost 10" across.

Greenjeans

Wow, that's a crater! We have an 8 month old Airedale puppy.

The bit of aggrivation is well worth the therapy I derive from coming home from work at night and playing frisbee with her and running around until we're both out of breath :)

I wonder if the type of grass makes a difference. I have a KBG, Rye, Fescue lawn. We sometimes "dog sit" for my son's two female terriers (about 12 lbs each). I haven't seen any brown spots or flushes of growth. Of course, they don't pee large quantities.

-Deerslayer

Females usually cause the problem because they empty their bladders all in one squat. Males sprinkle every vertical surface they can find.

I think stressed grass would take it harder. You might just scatter a few handfuls of table sugar in your dog's favorite spot. The sugar will stimulate reproduction of the microbes that do the work on the urine.

I have a med terrier, and the only times my lawn is affected is winter, and summer. If we have a lot of snow, the dog only goes in one area that he clears. In the summer, if it's dry, I get a bunch of little brown spots. Usually water will fix it. I'm trying the sugar method with mixed results.
In the spring,with lots of rain, the grass seems to grow faster in a bunch of small circles around the yard. I assume this is where he went, and the grass does better in those spots.

whip1; if you want to clear up those circles, you need to provide more fertilizer in general. The dog is doing more fertilizing than you are.

"The dog is doing more fertilizing than you are."

I'll second that.

-Deerslayer

I already applied CGM, and I will do another feeding in the middle of May. I didnt believe in high "N" fertiliser in the fall, and I have since learned the error of my ways. That might be the problem.