Question
How do you test a lawn for grubs?

Answer
Easy.

Look for a tan area that you suspect has been attacked and damaged.  Check a GREEN region adjacent to the tan area, NOT just the tan area of Grass.  When there are a lot of Grubs, the soil lifts easily, like a plush green rug.

Note please: EVERY HEALTHY LAWN has SOME Grubs.

They just don't have a lot of them.

The best way to give yourself a Grub problem is to treat your Lawn with something that kills all their natural predators.

There are so many things out there that destroy Grubs, it's practically a miracle they are not extinct!

A few Grubs are not a problem.  And your Birds love them.  I find them here and there and I place them in the Bird Feeder for tomorrow's breakfast.  Birds are your best Grub control around.

Lots of other things can make a Lawn sick.  Grubs are RARELY a problem.  Make sure you have a PROBLEM before you treat for them.  If you THINK it's a problem, write back and let me know.  We'll discuss it and come up with a solution that won't hurt anything except the Grubs.

Thanks for writing.  Nice to meet you, Alfonso.