Periodically sweep or vacuum and wash the floor. Potting equipment, benches, belts, machines, etc. should be hosed off and washed with greenhouse disinfectant. Pest exclusion involves any measure that can be taken to prevent the introduction of pests into the greenhouse. Implementation of exclusion should begin with the arrival of new plant material. Plant material shipments found to be infected should be reported to the supplier and not allowed in the greenhouse or production area.
Exclusion frequently involves physical barriers to pest entry into the greenhouse.
Often, the main problem is to recognize how insects or diseases gain entry. All dirt floors or dirt floors under benches are difficult to sanitize and can be breeding places for insects and diseases. Make sure drainage is adequate to prevent standing water. Exclude pets and rodents from the greenhouse. Implementation of judicious exclusion and sanitation practices in the greenhouse can control or help manage many of the pest problems that growers face while reducing the need for chemical pesticides.