Piece of plastic
This supposed ultrasonic cleaner is actually plastic box with small engine which makes water vibrating. That of course doesn't clean anything :)
By Katrin
Tuesday, November 10, 2026 · Customer reviews of US businesses
The Fair Hearing score
Bad
99 reviews
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duplicaten.com (duplicaten.com) has 99 customer reviews on The Fair Hearing, with an average rating of 1.9 out of 5.
Showing 73 reviews with 1 star · Clear filters
This supposed ultrasonic cleaner is actually plastic box with small engine which makes water vibrating. That of course doesn't clean anything :)
By Katrin
SCAM COMPANY! Do not use!
By GD
This supposed ultrasonic cleaner is entirely useless and does not in any way do what it purports to do. I wrote on many occasions and supplied videos as requested which is all just a ruse to have you lose interest in complaining. They eventually responded with giving me a $3 refund which ludicrous as it simply doesn’t work. DO NOT GO NEAR THIS COMPANY!!!
By Nicole
Ultrasonic cleaner it is a scam. Not working at all! False promesses
By Sylvie
The item (ultrasonic cleaner) that I bought from Duplicaten is not cleaning anything. Customer service unresponsive. Avoid them!
By Elena
I made an order on Nov.18 2022 and never received and this is the 2nd message I send never heard a word. I feel sad
By Tom
3 months waiting, no delivery. No useful response, other than patronising emails . Awful will post every month till I have an outcome
By PJP
The absolute worse customer service. They only communicate via email and refuse to issue refunds after waiting 2 months on a lost shipment they expect for you to be patient at your own expense for their lack of a proper shipping company. In the end I ended up contacting my credit card company to file a claim for a fraudulent transaction.
By Moses P.