When starting: Turn on the power switch first, and then adjust the dispensing valve. When shutting down: close the medicine valve first, then turn off the power. If you have a question or concern before or after receiving your item, please do not hesitate to contact our customer service team by clicking on the. Link in the bottom left.Your satisfaction is the most important thing we pursue. The item "220V Electric ULV Fogger Sprayer Cold Fogging Machine Virus Disinfection" is in sale since Tuesday, December 10, 2019. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Plant Care, Soil & Accessories\Garden Sprayers". The seller is "joffre-2917" and is located in Shenzhen. This item can be shipped worldwide.