Curative insecticides for white grubs and bluegrass billbug are mutually exclusive.

• A. True
• B. Sometimes
• C. False
• D. Not sure

Answer: (C)

The idea being tested is that curative insecticides for different turf pests can overlap in their effectiveness. In practice, a single product can be effective against multiple soil-dwelling pests if it is labeled for both and applied correctly. There are broad-spectrum or systemic turf insecticides that kill grub larvae and billbug larvae alike, so you can achieve curative control for both with the right product and timing. Because labels sometimes cover more than one pest, the notion that these two curative controls are mutually exclusive isn’t accurate. There are options that address both white grubs and bluegrass billbugs, provided they’re used according to label directions.