Let's recap, shall we?

On 9/5, your neighbors gave you rice krispy treats.
On 9/6 they mowed your lawn.
On 9/11 they mowed your lawn again.

I don't think it really matters what brand of mower you bought, does it? Why don't you just give them the manual? Hell! Just give'em your GD new lawnmower!

Always call the place you live a house. When you're old, everyone else will call it a home.