1" worms in garden!

[Theory5]

hey, I am managing a garden at the MSPCA in Brockton, MA (lol I was going to post it at the MSPCA but their web blocker blocked it for wierd reasons such as guns and violence) and today before I put in the Dazzle Roses and Whites (apperently flowers are now named to sound good) I found inch worms on EVERYTHING and they had started to eat another type of plant I have in that garden (some type of lilly or something, they were there when I rebuilt the garden, they had completly overrun it and the plants I threw in the woods have started growing) so I went online and read that citris juice bothers the inch worms (I didnt want to kil them) so I took an orange, cut it in half, squeezed the juice into a cup and cut up the rind. I then mixed the juice with a little bit of lemonade and sprinkled it on the plants. Is this the best way? Could someone help me get rid of the inch worms?