scenario time, lets say the protector wears off in 3 months, (traffic area's) . they then spill insence oil on the carpet, they then think "its protected, we'll clean it up in the morning when we are sober"

get up next morning and it doesn't come out, they call you, "oi! you protected our carpets and we just tried blah de blah de blahhhhh, what ya gonna do about it?" you come round, try to get it out, as before no joy.................... now what?

where does the blame lye? are you (mike halliday) liable for there carpet? or do you just say "well i never said it was permanant?
genuine question! i'm intrigued.