is there any 100% Free Adware and spyware removal tools avaliable on the net?

they really need to be free and reliable as a cannot buy anything online, thanks

Spybot is available at :-

spybot.safer-networking.de

adware spyware removal tool

McAfee Internet Security Suite 2008 – 3 User [OLD VERSION] $1.95 Mcafee Internet Security Suite for PC…