Im not sure if this has been tackled before, has anyone removed the plastic cover for the 2nd row seat guide rail?

Just went to the beach the other day and the passengers were nice enough not to tap their footwears to remove the extra sand. Sand got inside the rails and though I vacuumed maybe 80% or 90% of it through sticking a thin nozzle, my OCD still convinces me there is still more inside and dont want a gritty slide when I move my 2nd row seats forward.