there are many factors that affect the efficacy of disinfection service, such as the density of rats and pests in the customer's room, the suitability of operation methods, the efficacy of drugs, the technical level of workers, whether there are hidden dangers in the internal and external environment, and their own sanitary conditions. Any of the above points will affect the effect of disinfection service. Even if the disinfection is thorough, after the efficacy period, cockroaches that are brought back into the house or migrate and spread into the house will still multiply and do harm. No matter how good the cockroach medicine is, there will be a limitation period, and there is no cockroach medicine that will play its efficacy forever.

what is the standard of disinfection service? At present, the service standard followed by xiaosha company is the national patriotic sanitation campaign's four pests standard. There is no clear stipulation in the standard that there is no problem of rats and pests after disinfection, but the density drops below 3% after disinfection. All formal disinfection companies can basically meet the national standards after service. However, if we promise that there will be 111% no rat and pest problems after customer service, and there will be no recurrence for life after once killing, or how long it will take to ensure that there will be no rat and pest problems (half a year or even a year), it is obvious that such a company will be greatly discounted in terms of integrity or professionalism.

So there is no guarantee for disinfection service? Under normal circumstances, customers with low density of rodents and pests will not have rodent and pest problems for a long time after disinfection service, while customers with high density of rodents and pests will still have rodent and pest problems for half a year or less. Most of the customers with high density of rats and pests are rented houses, old (or simple) buildings, dormitories, commercial and residential houses, basements, restaurants, baths, hotels and other environments. In short, this should be determined according to the specific situation.