I have diverticulitis and I can't have seeds or I will be back in hospital with infection. I love salsa, mexican food, and anything spicy, but most salsa has tomato and or Jalapeno seeds in there. Hope to find one I can eat.
I wouldn't trust any store brand to omit seeds entirely; it's just not going to be a priority for them.
I'd suggest making your own instead. It's fairly easy and fast to seed tomatoes using a chinois, and to seed peppers using a knife. And it'll taste better, too!
BTW, many online medical authorities seem to think that seeds are not actually an issue for diverticulitis; maybe you should consider a second medical opinion?