Spy Centre's infidelity test kit is used to tests for bodily fluids released during sexual intercourse. This is a great item to help you determine if your spouse has been cheating, or if your teenagers are having underage sex.
Inside, the kit contains enough solution for a few tests to be performed. Use a black light to help find soiled surfaces and then mix the solution together with distilled water and use a cotton swab to dab the underclothes or bed sheets, then wait a few minutes for the solution to set and give a reading on whether or not it has detected seminal fluids.
If you feel your spouse or teenagers are up to no good this a great tool to help you determine if they are being mischievous when not in your presence.