Home test is testing the product's features in vivo environment. Respondents are given samples of products to be used over a certain period, after which it can then evaluate the results of its use. Tested products are offered both individually and together, for example, with a competing brand, most tests are done "blind" when the respondent does not know what kind of brand they are testing. This method is indispensable when you need to test the product over a long period.