Non-dairy creamer and pickle manufacturer TreeHouse Foods announced it has agreed to pay $35 million for Cains Foods, a privately-owned manufacturer of shelf stable mayonnaise, dressings and sauces.  TreeHouse says it belives it is the largest manufacturer of non-dairy creamer and pickles in the US. Cains sells products under the Cains, Naturally Delicious and Olde Cape Cod brand names, as well as manufacturing private-label products for national grocers and restaurant chains. The transaction is expected to close within 30 days.