crab/bermuda grass

crab/bermuda grass

I'm new here and gardening for the most part. Last year me and my SO planted a vegetable garden and it was great, except a few months into it was overtaken by crab/Bermuda grass. What would be the best way to control/get rid of this? My SO's dad says to buy round up but I've heard that you can't use it in a vegetable garden and I'm also concerned about its safety. I read up on using corn gluten meal as well and was wondering how effective this is. I'm not opposed to using chemicals as long as it won't hurt me or my pets. I have extremely good soil and full sun, so it got pretty out of control last year.
Dragonwing begonia help

Dragonwing begonia help

GardenshowTime!

GardenshowTime!

As of June 27th

As of June 27th

I’m so excited!

I’m so excited!

Pics

Pics

I dont have a garden…

I dont have a garden…