Thanks for the warning. I cleaned my pilot's ('05 with 106k mi) last weekend. I used brake cleaner. The rattle was still there but I still cleaned it anyway. Yes, it is somewhat tricky to remove the pcv valve (and to locate it, first. Lol). Heeding your advice, I carefully wiggeld it up and down with slight pressure as I pushed it out to create a small space so I can insert the flat head screw driver. Even then, I knew I had to be extra careful as I pryed it gently. Putting it back, I had to use the handle of the screw driver to tap (gently) it back in place.