These Ortho insect and weed killers, regularly $6.97-$10.47, are now $3.98 at HomeDepot.com. Note that the price may vary slightly by zip code, but this is the lowest price we've ever seen on them. This is part of their Spring Black Friday sale which typically offers the lowest price you'll see get all year. Enter your zip code for free pickup at your local store. Sale tax is charged in most states.