OLATHE, Kan. — A destructive pest is invading and feeding on lawns in our area.

FOX4's Regan Porter is Working for You to find out exactly what armyworms are and how you can spot them.

Have you seen brown patches on your lawn? Jacob Rhoades said it could be the result of armyworms.

Rhoades takes care of more than 15 lawns and recently found 10 lawns – including his own – destroyed by armyworms.

Last year, he only saw one case.

"[It's] just irritating because you put a lot of time," Rhoades said. "I'm the millennial guy who's all about his grass, and now my grass is brown."

Lawn experts said if you see brown or patchy spots in your yard, act fast.

Here's how you can test to see if armyworms are the cause:

Mix dish soap with some water and pour it where the brown grass meets the gree

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