A Rat Catcher is called out to the house of a guy who swaers he has Rats in his house.
Upon inspection the Ratcatcher says "No Rats here mate..your house is Rat free"
The guy is sceptical and asks the ratcatcher if he is sure.
"Yeah 100%" says the Ratcatcher.
The guy is still unsure and asks the Ratcatcher if he can check again.
"Ok says the Ratcatcher, i'll bring in my Labrador dog to have a sniff around"
The Labrador has a sniff around and still the ratcatcher can find no Rats.
The guy is still unsure.."I know i see a rat here" he said "can you do any more tests?"
The ratcatcher is getting a lil pissed and says "well the final test i can do is bring in me cat to have a sniff around"
"Ok do it" says the Guy
The ratcatcher lets his cat in the house , the cat has a sniff around and still finds no Rats.
At last the guy is happy "Ok How much i owe you" he asks the Ratcatcher.
"That will $200" says the Ratcatcher
"$200?, thats a bit much , you never even found a rat" says the guy
"well" the ratcatcher replies "it would have been cheaper if you'd took my word for it, but after having the Lab test and Cat Scan it puts the price up a bit"