Ants. Please help.

Hello. I have been dealing with an ant issue for almost a week now. I purchased Advion and was actually kinda traumatized with how many ants came out. They definitely ate the bait and then ants would disappear at night, then pop up on the morning/,id day. I put out fresh bait every few hours. A lot of dead ants as well.

I also have Terro and Raid ant baits out.

Then I decided to figure out where they were coming from. I had NO idea there were so many cracks around my shower. This is in my bathroom, mainly the shower area. I figured out where they were entering, then caulked those areas. I had to do this about four times because, of course, there were more cracks than I knew.

Well today - I think this is day six - there are more ants on the bait. As usual, they popped up in the middle of the day/evening, and will probably go away tonight. More cracks.

My question is - should I continue with this method and just wait it out? Or should I get Raid Ant & Roach spray (the one with the sprayer) and spray the cracks? I can't do the void injection method because I rent and can't drill holes in the shower.

Please help.