HouseCall for Lotus Notes Servers - Version 1.0 Trend’s HouseCall for Lotus Notes is a free virus diagnostic tool, specially designed for Lotus Notes administrators. It is the only online service that allows IT professionals to quickly and easily get a real-time report on the number of viruses hiding within their Lotus Notes databases. No software or hardware installation is required. Administrators just click on the HouseCall for Lotus Notes icon to start scanning Notes databases for malicious Java scripts, ActiveX and Java applets, as well as traditional viruses.