Rub them into your nose after washing your face, and especially if you have recently popped or pushed anything out.
Pop stuff if its ready, dont force it
wash Face, get all gunk off, wash face gently but thoroughly
Use Stridex wipes
Use Lotion (I use Cerave, its the only lotion that doesn't make me break out, and isn't oily to me) but everyone is different.
Doing this made my nose pores (biggest ones) look considerably smaller, and less dark because I pushed the blackheads out. My nose doesn't get nearly as much sebum anymore, so nothing really to pop.
Stridex / Salicylic acid products in general completely changed my face and helped with my acne more than anything. Make sure you find a good lotion for though because it's incredibly harsh, having your face be so dry it burns sucks, and is not good!