Clear Zone Metered Pyrethrum Spray contains a highly effective insecticide designed especially for use in automatic dispensers. The dispenser activates the metered valve every 15 minutes. Usually the effectiveness of Clear Zone will be noticeable within one hour after the dispenser is activated. If less than 24 hour control is required, the dispenser should be set to start one hour before control is desired and run one hour after control is no longer needed. Keep in mind that such factors as air flow rate, size of space treated, humidity and room temperature all affect insect activity and control. Therefore, one unit per 6,000 cubic feet should be considered an average need with adjustments made depending on specific conditions at place of usage. As with any method of insect control, best results are achieved when sanitation and other positive insect prevention practices are followed.
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