While there are a lot of commercial spyware blockers and scanners on the market for business and personal use, there are also a few free spyware scanners as well. Here is a small list:
Try These In This Order: All Free
1. Malwarebytes’ Anti-Malware -http://www.malwarebytes.org/
2. Spybot – Search & Destroy – http://www.safer-networking.org
3. SUPERAntiSpyware – http://www.superantispyware.com
4. Spywareblaster – http://www.javacoolsoftware.com
5. Ccleaner – http://www.ccleaner.com