Australia

I have caterpillars eating my bulbs. They appear to be coming up through the bottom and eating a tunnel through the round underground part. I only new this when they began to look like they were bleeding. I am about to loose 100 of them. What can I kill these caterpillars with and do I have to dig them all up and dry them out to ensure the pest stays away. Thanks Judy

• 24 Jun, 2011