Out here in goat head land, they mowed the bike trails a few weeks ago and I got stung 4 times in 4 days. The City has since "swept" the path and I've been good so far.
LBS recommended FlatAttack tire sealant. I got the messy, PITA, bottle and finessed it into my Presta tubes, but you can buy pre-loaded tubes in popular sizes.
Yeah, it/they add weight, but the weight is becoming less of a concern vs. flat-fixin'.
Thats the very reason I ditched the cute little, lightweight mini-pump in favor of a full size frame pump. 200 strokes to get to 80psi in a 700 x 23? Really?