Are the at home/mail in STD kit from "My Lab Box" as reliable and accurate as in a doctor's office for routine STD screening? And, in the absence of symptoms is three months an adequate amount of time to be confident in the negative results of HSV-2, HIV? 

We don't keep track of online STD testing services. Most of them contract with reputable labs that use standard tests. Three months is always sufficient for 100% reliable HIV test results, but 4 months is required for HSV2.---