Check before u leap

A new vacuum cleaner salesman knocked on the door on the first house of the street.
A tall lady answered the door.
Before she could speak,
the enthusiastic salesman barged into the living room and
opened a big black plastic bag and poured all the cow droppings onto the carpet.
“Madam, if I could not clean this up with the use of this new
powerful vacuum cleaner, I will EAT all this s…!” exclaimed the eager salesman.
Do you need chilli sauce or ketchup with that” asked the lady.
The bewildered salesman asked, “Why, madam?”
“We just moved in, & there’s no electricity in the house!”