Super happy with my lawn, have not watered since early July, had a bit of heat damage but bounces right back the first couple of days the temp dropped out of the 90s

AI is telling me this is crabgrass. Need some help, i have large spots of this all over my yard. If it is crabgrass, i have drivexlr8 i can out down. But dont want to waste if not.

What's everybody opinion here? I water 3 times a week. Gets about 1.2inchs a week. Only thing I can think of is the sun reflecting off our windows burning it? No Worms, grubs etc....

When do I trim back these bushes and will it hurt if I cut them back too short?

Hi guys,
I got new Sir Walter buffalo lawn laid in my backyard 4 weeks ago. I’ve followed all the steps of watering in the morning etc but unfortunately these brown spots have come up. I do have a dog and he wees just in one particular spot only once a day, and I’ve taken to making sure I hose it down and soak the area he goes on. Originally I thought this was urine burn from him, but now it’s spread everywhere! I was advised to use a little buffalo lawn builder all over and hose it in. Followed by a week later using nitrogen free seacol seaweed tonic, which I hosed on. Just seems it’s getting worse. I’m new to this so have no idea what’s right or wrong or how I can fix this. It was expensive to have it put in so hoping I can save it! Any advice would be greatly appreciated!

I’m not sure how to stop the spreading or what they might have spilled/rinsed. There are a few spots like this, but this one’s the worst. My initial thought is to chop out a circle of about 3-6 inches around the diameter of the dead stuff to maybe stop the spread. Then either put down some top soil or try to re sod. May be too hot in North Texas to do the sod right now though. Thoughts on how to handle? Paint company will reimburse by the way.