What to use for those nasty little devils?

Just bought a new house and find out it’s on “sticker hill”.

Go with Image/Imazaquin. But wait until it's hotter than holy hell outside Like Mid/Late July. I'm linking the RTS and I've only used the concentrate. RTS Should work fine for you. Great summer product to apply. Follow the label recs.

https://www.imageforweeds.com/all-products/kills-nutsedge-rts

I use massive amounts of the " Industrial " grade of this for my pastures and it works great...
https://www.tractorsupply.com/tsc/product/pastora-herbicide-5-oz

Man. Not saying it doesn't work or wanting to get into a pissing match here, but Nicosulfuron isn't even close to having a residential/lawn label unless things have changed and it's straight AG use?

I can't speak for it's use on residential lawns but I know it works on my fields and I used it on the yard around our house after we built it. I recon it's like bringing a bazooka to a knife fight. I would most certainly defer to your knowledge on anything residential.