Although rational choice researchers has investigated how offenders successfully commit certain crimes, there is a lack of research of looking at the factors explaining the use - or not - of certain detection avoidance strategies. This study introduces the concept of "forensic awareness" as a detection avoidance strategy, and proposes to examine the effect of disinhibitors, target selection behaviors, and acts that may potentially leave evidence at the crime scene on its use. Factors influencing forensic awareness are tested using logistic regression models on a sample of 222 rape events collected from offenders incarcerated in Canada. Offenders exhibit less forensic awareness when under the influence of drugs and/or alcohol. However, offenders who show some form of target selection are more likely to take forensic precautions. Finally, offenders who break and enter in the victim's residence, and undertake specific sexual acts during the crime are also more likely to exhibit forensic awareness. Despite the increasing use and knowledge of forensic evidence by law enforcement, offenders are inconsistent in their forensic awareness and they direct most of their efforts toward protecting their identity, neglecting to either destroy or cleanup DNA that could be recovered at the crime scene. Tables and references