Bests & Worsts Reviews from Amazon

See attached picture of one unit that had *normal* paper instead of wax on the back, destroying the warning sticker and ability to be properly placed on windows. Two other units simply won't go off. Not sure if I got bad luck or not, but again, customer service sucks. Maybe if I'd been *given* these for free like 90% of the 5* reviewers here have, I'd have a different opinion, but these are about as good as 99 cent dollar-store alarms, except they don't even have the same level of quality assurance. When I emailed doberman about this issue to try and invoke the 90 day warranty the provide with these product, they told me I'll have to return them on Amazon - they aren't even honoring their own warranty! Not only am I giving a one star review here, but I'm filing a complaint with the FTC since it's ILLEGAL to not honor your warranty unless your company has gone bankrupt.