Does Sap Sipper prevent it from hitting,or is there an another way?
Limber prevents the pokemon from being paralyzed. Sap Sipper will work too. For other pokemon, a cheri or lum berry is probably the best way to go.
Yes Sap Sipper does Prevent Grass type moves from hitting, Including Stun Spore. Another counter could be holding a Lum/Cheri berry to get rid of the Paralysis. It's Helpful to have that ability on Azumarill and Sawsbuck. Hope This helps.