The salinity of sea water (Atlantic 3.1% or Pacific 3.3%) is great enough to seriously damage grass in a lawn.
The primary benefit is to not have to mow your lawn - ever. In areas with severe water problems, like the southwest US, artificial lawn is a great way to make a property look nice without using water.
a Mexican without a lawn mower is unemployed
After a main water valve is closed the system's PVC pipes are still full of water and will drain to the lowest sprinkler head until the system is empty.
it could be a blown gasket, cracked head or water in the exhaust
Squirt gun, sprinkler, any sort of water. Also you can spray the edges of your lawn with tiger urine (available at some lawn and garden stores).
No, there is no wheather instruments having lawn guages for how much to water
The first and foremost thing in keeping a lawn nice is water. If the lawn does not get enough water, it will dry out and turn brown. Keep the lawn trimmed, and make sure it gets plenty of water, especially if it is getting hit directly by the sun with no shade.
no
you can wash it on your lawn, that means your lawn will get watering
There are a couple advantages. You do not have to mow the lawn and you do not need to water it.
Some of the abiotic factors that effect grass growth are minerals, water, carbon dioxide, and many others. Without these and other nutrients, grass will die, and your lawn will look bad.
Mow it weekly and water it.