Use efficacious in a sentence

This page helps answer: how do I use the word efficacious in a sentence? How do you use efficacious in a sentence? Can you give me a sentence for the word efficacious? It may also be related to grade school, exercise, words starting with skool, teach, and educ.

Example sentences with the word efficacious, a sentence example for efficacious, and efficacious in sample sentence.