You got to be more assertive with your cats, your literally 10-20 times their size, give them food and protection and they know it. One good technique I've found that doesn't escalate things is to blow air in their face (with your mouth). They tend to go away, but they also don't get pissed off. Don't want them somewhere, physically move them , without emotion. Find them annoying, blow in their face or move them (gently) away. You can escalate with water spraying.