Pesticides are poisons and I want my child to be safe at school. School administrators say that there is no reason to worry. Concerned Mom Pesticides are as you indicate toxic substances. We use them to control both serious and nuisance pests.
Pesticides serve important roles in our society to protect crops and public health.
When their use is warranted, they can and must be applied safely. Such treatment, if properly conducted, should have resulted in relatively limited pesticide use and potential human exposure. In the real world, however, some school facilities personnel and local pest extermination companies over did it. Dursban was applied much too heavily and much too often. I once was in a large middle school where a pesticide spray had been applied during school hours.