I use special tool, dont think it's needed for damaged Teflon seals like minds. For dirt I use compressed air, then straw duct taped to vaccum. Still saw dirt fall in after pulling Injectors out, stuck vaccum in there but waiting for borescope camera to be sure. I'm doing valve cover gasket n spark plug gaskets since they failed. I do a lot of summer driving.
Injector puller
https://a.co/d/8WsbEnh