At Lowes this gallon of weed killer is $7.98 and a gallon of Roundup was $11.98. I used Spectracide last week and everything I sprayed was dead in 3 hours. Their webside said they have 190 in stock, but you cannot buy it right now due to the weather conditions.
https://www.lowes.com/pd/Spectracide...ler/1000373169
If you want to make your own mixture, this one gallon sprayer at Lowes is $9.97 and they have 56 in stock at 466A store. Two gallon sprayer is $16.97.
https://www.lowes.com/pd/Chapin-1-Ga...yer/1000176199