comments:
I'll second this. Spray all the edges of rooms, inside couches, recliners and mattresses and bed frames. Spray once a month for three months. Just a simple $15 plastic pump sprayer does great. Both a sprayer and Crossfire can be bough on Amazon (though may be restricted in some areas, I dont know) https://a.co/d/07ovroaz
Idk I just use these for lots of stuff. Dirt cheap and do the job just fine. They make other size sprayers with good reviews Chapin 20004 Pump Sprayer,... https://www.amazon.com/dp/B000E28UQU?ref=ppx_pop_mob_ap_share
Adding to your comment for OP > I second the 30% vinegar suggestion - I used a pump sprayer (here’s an Amazon link: Chapin 22000 Made in USA Value... https://a.co/d/0iIdrEQ1 but you can purchase it elsewhere) I got the 2 packs for $30. Once weeds are dead, it’s best to use a blower to get organic material off the driveway to prevent it composting into dirt on the top layer. I’ve also seen someone dump a thin layer of cement (powder) onto the driveway, then water it in to act as another level of weed barrier. I have no idea how long that will be helpful, but I found it interesting and may try it myself until I can budget new gravel and edging for my driveway.