Regrettably, un-fertilization is not possible. However, it doesn't last forever, and as we move into fall doggie burn will be less likely as temperatures drop and soil moisture rises. Those uneven spots will also tend to fade in if you're fertilizing correctly in fall. Some people train Fido to go in certain areas of the yard only, and simply give up that section to doggie damage. Over the course of several years, using high carbon, low nitrogen organic products will condition your soil to be able to handle the nitrogen fertilization from dog urine. We have two dogs, with up to three more visiting at a time (our dogs have more social life than we do), and no doggie burn. There's also no dark green spots in the lawn as it's well fed organically, and the organics bind the nitrogen and force it to release slowly. The whole lawn is dark green. That takes adding a lot of cracked corn and/or sawdust (horse bedding pellets) until the soil organic material rises...which does take time. Proper moisture in summer is key, as you found out. Essentially, you're diluting the dog damage down to a good urea-based fertilizer. Keep that up. While it would be theoretically possible to do that over the lawn area where the dog goes, it would be expensive--and wouldn't encourage the best conditions for grasses, so I'd recommend continuing with the watering can.

From the picture posted I think it is dog urine. Brown patch has a grey like outter ring and the inside of the disease does not look staw color as your picture shows. Brown patch isn't a concern in bermuda either. Spring dead spot is a major disease for bermuda but that's not it, nor dollar spot. As far as when to fertilize, well if it's not above 90 and you can provide good water then for bermuda the time is now. A good fertilizer for bermuda is one with a high first number with 50% slow release. As far as the rest of the information on taking care of your lawn, try searching online. Bermuda is pretty fool proof and is good for people who don't want to fuss over their yard.

Well, bleach will kill the smell. But chlorine bleach will also kill your grass and it's got the problem of being a pollutant. It's not Earth-friendly. I'd like to suggest that you try one of the enzyme solutions sold at PetCo or Pet Smart type stores. They do get rid of the smell and they won't hurt the grass or the rest of us.

Yep, no way on earth turf grasses will grow in that much shade!! There's a couple of ways you could approach this. First, get rid of the path - not attractive and awkwardly laid out at best and plot out a better pathway that actually leads somewhere. Paths need to have a destination! Not sure what the concrete pad is to the right, but if used for a dining area or similar, that makes a reasonable destination. You could also take it all the way down to the end of the garden and create a small seating area. Make the path generously wide, fill it with wood chips and plant any variety of low growing shade plants as you like on either side. Dogs and wood chips get along well together - they are the go-to surfacing material for all the dog parks around here - and the dogs will tend to stay on the obstacle-free pathway rather than rampage through the plantings.....after you show them the ropes. If you have no need of a path through the whole garden (no destination), you could also try some hardy, woody stemmed groundcover, something that will thrive in shade, like wintercreeper, vinca or in my area, salal. Possibly even English ivy if an appropriately non-invasive species in your area. But you would need to plant in blocks protected from the dogs until the plants get established - several months at least. Very few groundcovers starts have any ability to stand up to dogs or other foot traffic immediately after planting. And if the dogs have a preferred traffic pattern already established, you may never get any groundcover successfully established in those areas - it will always show wear or usage so expect that or just make these the primary pathway.