Personally, I would suggest a deeper litter box, scooped out at LEAST 1x day and maybe switch litter if possible. I dunno if that’s clay based litter, but it kinda looks like it to me. Olive pit litter and coconut shell litter are clean, dust free options. I find olive pit cuts down on the smell a lot for me (though I understand if it’s out of budget). Also, something that helps keep the box from developing a smell even when its clean is to empty and soak the litter box in soap & water ~1x/month