Does anybody have window restrictors on their windows, for security reasons or to stop children opening them too far? I posted on a different thread about a bungalow (not your typical old fogey bungalow I'd like to add ) we have seen but I am majorly concerned about security & intruders accessing the house through the windows. At night time in summer we like to sleep with our bedroom open too & obviously during the day if it is stifling indoors I want to have the option of opening some windows. Are window restrictors fail safe or can they still be prised open? Thanks