Prime Source Celsius WG - 0.226 oz Easy Mix Packet-Post Emerge Weed Control

The most effective selective herbicide I've used. Get yourself a two gallon hand pump or electric sprayer, some surfactant, mix it up and you're ready to go. As others have said, it works slowly but it's very effective. Bonus, it's less expensive than the common brands at big box stores when you consider you get two gallons out of one packet. Be sure to use it in the right conditions (season/temperature/precipitation/wind) for best results.

Celsius is the first lawn weed killer that I’ve used since starting my life as a homeowner this fall. It also might be the only lawn weed killer I use now! I used it for the first time last night on a group of thistles, prickly lettuce, and parsley in my St. Augustine and Bermuda yard. I used the strongest mix possible, but it was still encouraging to see these weeds wilting and yellowing at their bases today. And of course my grass was left completely unscathed. This herbicide is easy to mix because of the granular form and it’s friendly to all Southern yards, even the more sensitive St. Augustine varieties. I’ll keep a supply of these packets coming at all times!

Pretty good weed killer, works slow but it works.

DId have some effect on Chamberbitter. Will try again this spring in hope it wipes out this nasty rapidly invasive pest.

We use this potent product to control Dollar Weed in our yard. We mix 1 packet with a gallon of water, and we spray on the leaves very sparingly, and in a week or two the Dollar Weed starts to die off. It may require a second treatment and do not use this product unless the plants are dry, with no rain expected within a day or so, so the chemical does not just wash off the leaves. We are careful not to over-apply the chemical, being cognizant of our waterways and all... great product if used correctly.

Follow the instructions and add a bit more. It did nothing for my lawn. Not sure if this is the real deal, but it does not work. I waited a week to see if anything is going to kill my weeds. I have overgrown weeds and only the dandelions were slowly dying, but didn’t kill it all the way. I tried to upload a picture, but it won’t work but picture a front lawn with all different types of weeds, fully overgrown my lawn.

I’ve used Celsius in the past and it works well. A bit expensive, but better to have a product that works. Don’t get impatient to see it kill fast.

Will let you know if it works. Bought for dollar weed realized package was from 2023 so who knows.