I agree totally.
the unfortunate thing is that 80% of dog owners are not like you.
I personally hate dogs with a vengeance
anything over 18" high scare the cr@p out of me (I got bitten arround the face by an alsation when I was six - not a pleasant experience) and anything below 18"
are generally irritating and noisy (I know thats mostly the fault of the owners but like i said, 80%...)
ALL DOGS SMELL BAD
dogs make the car, the house and often the owners clothes STINK of dog. This is a bad thing 
but back to the topic of cats defecating in the lawn 
buy asda smartprice curry powder and sprinkle it on the flower beds every 2 weeks. (any curry powder will do, asda smartprice is just the chearest!)
you will not get cat trouble then, trust me 
I agree with you in respect of the fact that mostly it`s the owners of antisocial pets whom cause decent and considerate animal enthusiasts/owners to be tarred with the dirty brush.
Perhaps your experiences at such an early age have unfairly darkened your views of canines, but I find your sweeping pejorative statements concerning the (asserted) malodour of many owners and ALL of their canine companions, to be hardly fair.
I (and many like me) have a lifelong affinity with working-canines....taking pride and joy in the personality, working-abilities, appearance, loyalty and companionship of what is in reality; a domesticated 'wolf' in our sitting room.
Healthy and well cared-for dogs are not malodourous....actually the ones you might have smelt, would be the poorly/improperly nourished, under-groomed and doubtlessly neglected individuals which hardly represent the canine norm.
It is a great pity your terrible experiences of dogs as a child have coloured so-badly your adult views of dogs.
I can assure you, with respect to your assertion that MANY dog owners are BAD dog owners, that you are wrong.....many of us work very hard each day to help people whom feel-negatively (as you do) about dogs see the positive.
My three Border Collie sheepdogs work (daily) on the farm and also appear as highly trained sheepdog actors in film and Tv. productions.....they are sociable, trustworthy and
always under my full-control (both in public and private).
I hope one day you are able to cast off the
ghosts of the past and fairly-see; dogs as the companionable, loyal, wonderful, able and enthusiastic (clean) beings they really are.
