PestPatrol 

PestPatrol from eTrust is one of the best known anti-spyware programs. It is reviewed and tested along with such programs as Spy Sweeper, SpyBot and others. PestPatrol is mostly used in business enterprises, that need security of hight quality. It provides a really better protection than some other free softwares, but for those users who want to have such protection at home it might be too expensive.

Here are the advantages that you get for it's price:

• Userfriendly software.
• Easy to install.
• Provides effective spyware and malware detection and removal.
• Identifies malicious cookies.
• Provides definitions of founded spywares.
• Database is always updated so the newest parasites are know to program.
• Real time protection.
• System scan is complete and very effective.
• It is able to detect and remove up to 80% spywares.
• Doesn't slow down computers work during scan process.
• Provides free scan online.
• Alerts about attacks or dangers are available.
• It protects even against crackers and hackers.
• Help support.

Disadvantages:

• Does not detect keyloggers
• Costs. 30$ for package; 40 $ for package and backup CD;
• During free scan, program finds spyware although system is totally clean.
• Free online scan doesn't remove detected parasites, you must purchase software if you want to remove it.
• Doesn't detect files that are infected with viruses.
• Cannot restore files that were deleted accidentally.
• The program even removes spyware references in the Registry.

PestPatrol is a quite good software but still it has many defects, unlike other anti-spyware that cost less and provides better services. Although it provides security from hackers what is impossible for other's softwares.