The care of a Cu-sil denture is somewhat different from a conventional denture or partial denture because of the elastomeric gaskets used for retention. The manufacturer recommends specific cleaners for this type of material. Information can be found on the Cu-sil website.
Also you must be very careful in handling to Cu-sil material to avoid damaging it. If it is damaged, it may become less retentive and also cause gingival inflammation and irritation.