Woah! Calm down, theres not need to be insulting.
For the record I do like cats and I would not put one in a wheelie bin!
Ok...
First off, yes there is a risk from any animal waste. However, the risk of contact is far lower since the animals you list are not (generally) domesticated. My point is that other pet owners have an accountability that cat owners do not.
If you own a dog you have to take it for a walk on a lead and follow it round so why not stick your cat on a lead? thats not a derranged suggestion, people do it. Saying that my ideas are loopy just says that your a lazy, you bought a pet take responsibility for it! I'm quite sure that you wouldn't like it if some elses animal came over your fence and crapped all over your lawn where your kids play?
Thirdly, where I live there are large numbers of cats the owners just let them breed. Again, responsibility, thats the thing RESPONSIBILITY. I don't think its unreasonable to ask that people take responsibility for their pets.
Last of all, what do chavs have to do with it? I've never had a chav take a crap in my garden but I would pick up a chav and put him in a wheelie bin if he did
(Ahh Trig you beat me too it, I took far too long to write that. I was a little bit angry :-( )