Insecticide spraying


How does one balance the need to overhead water every day or two with the need to spray for cuke beetles & SVB? How "waterproof", if waterproof at all, is Warrior T, Sevin?Is each washed off  by water quickly or slowly? In other words how much residual insecticide is left after say an hour of overhead watering? Thanks!
 
Bernie Loewenthal
Stratham NH USA
50 miles due north of Boston MA,
near the seacoast
New Grower


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