If you want a perfect lawn, you gotta learn how to kill crabgrass.
This throw in of grass is invasive.
Dealing with this problem can be frustrating as you should probably spend money and time to remove them.

Image by: Pest and Lawn Ginja
But worry not, asPest and Lawn Ginjaon Youtube showed us ways to kill, prevent and control crabgrass.
If its this kind of grass, there are no chemical options other than a roundup.
Its best to pull out this jot down as you see it as it only has shallow roots.

There is also quack grass which is highly Rhizomateous making it difficult to control.
These are all perennial grass that will grow over winter.
Its best to dig them up and replace the soil.

you’ve got the option to also use sponging.
Get a bucket of roundup and some surfactants.
Thats going to help it stick to the leaves.
Gently grab a q-tip or sponges and lace the top two to three inches of the grass blade.
Warning: most people put it on too thick that kills everything.
Crabgrass is a clumping grass with horizontal growth and pointed tips.
They grow parallel to the ground.
Here are some ways how to kill crabgrass:
Step 3:
Control them.
To control crabgrass, you need a pre-emergent down before the ground temperatures are below 55 degrees.