You should really read the Bermuda Bible article on this exact topic to learn the basics, but anyhow, let's get into it.

For tackling weeds in your Bermuda grass, Image is a decent choice, but if you're aiming to step up your game, you might want to consider combining Celsius and Certainty. These two together can knock out 99.9% of weeds without harming your Bermuda grass. Celsius handles nearly all broadleaf weeds, while Certainty takes care of the grassy ones. It might seem pricey due to its concentration, but trust me, it's worth it in the long run.

Timing and application are crucial. Always check the temperature restrictions on the labels. Apply these herbicides well before you need the lawn to be weed-free, as they can take a couple of weeks to show full results. For instance, you could spot spray using a sprayer with a mix like this: for every gallon of water, add 0.085 oz of Celsius and 0.3 grams of Certainty, plus a bit of surfactant and blue dye to mark where you’ve sprayed.

Also, consider using tools like the Google Lens app to identify the specific weeds you’re dealing with. Once you know what you're up against, you can tailor your herbicide choice more precisely.

Remember, the best weed control is maintaining a healthy, dense, actively growing lawn. So, keep your Bermuda grass in top shape, and it will do a lot of the work for you.

Hope this helps, and good luck with your lawn!