Tools or Techniques for Removing Grass and Moss from Brick Patio
Round-Up 365 will stop frequent reoccurrence. But, with Round-Up 365 only, you spray everything down &amp; when dead &amp; dry in 2-weeks, just scuff the remnants away with your shoe or a string trimmer.

Birds &amp; wind are your enemies &amp; the only way to avoid this entirely is to go with slab concrete. Not a good option unless it's colored concrete, your pavers look worlds better. You'll need to repeat the Round-Up 365 &amp; shoe or string trimmer annually or bi-annually.

Filling the paver joints won't do anything good. It would ruin drainage, looks &amp; the pavers much needed movements.