NZXT 500 dust issue

Have NZXT 500 with negative pressure and dust filters on, Still I see lot of dust sitting on my components, possibly from the open slots of back plate. Planning to tape off the open slots, is it a good idea ? Can the power supply also be a part of the problem? Can I vacuum the dust off with my dyson ? General tips about cleaning the case inside clean are welcomed

Since you have negative pressure, dust is to be expected?

Will positve pressure help, I have heard with NZXT 500 temps aren’t good with positive pressure

Pulling in through a filter and positive pressure else where should help.