 If you've got a solid base down already so you're not getting any movement in that patio, I don't think I would try to fill those joints in between. I would leave it exactly the way it is and just realize that you're not going to be able to blast stuff away with a pressure washer and just get yourself a stiff broom and maybe some simple green and just do it by hand every once in a while. That's what we're up for. Thank you very much, guys. Appreciate your help. You got it. Take care.