OPERATING SEGMENTS We have two reportable operating segments: (1) Retail and Wholesale Products Group and (2) Business to Business Products Group. These operating segments are managed separately and each segment's major customers have different characteristics. The Retail and Wholesale Products Group customers include mass merchandisers, wholesale clubs, drugstore chains, pet specialty retail outlets, dollar stores, retail grocery stores, distributors of industrial cleanup and automotive products, environmental service companies and sports field product users. The Business to Business Products Group customers include: processors and refiners of edible oils, petroleum-based oils and biodiesel fuel; manufacturers of animal feed and agricultural chemicals; distributors of animal health and nutrition products; and marketers of consumer products. Net sales for our principal products by segment are as follows (in thousands): Business to Business Products Group Retail and Wholesale Products Group Year Ended July 31, Product 2019 2018 2019 2018 Cat Litter $ 13,764 $ 13,301 $ 135,489 $ 124,635 Industrial and Sports   33,341 34,224 Agricultural and Horticultural 24,311 23,897   Bleaching Clay and Fluids Purification 51,905 49,783 2,318 2,098 Animal Health and Nutrition 15,897 18,062   Net Sales $ 105,877 $ 105,043 $ 171,148 $ 160,957 Net sales and operating income for each segment are provided below. The accounting policies of the segments are the same as those described in the Note 1 of the Notes to the Consolidated Financial Statements. We do not rely on any operating segment asset allocations and we do not consider them meaningful because of the shared nature of our production facilities; however, we have estimated the segment asset allocations below for those assets for which we can reasonably determine. The unallocated asset category is the remainder of our total assets. The asset allocation is estimated and is not a measure used by our chief operating decision maker about allocating resources to the operating segments or in assessing their performance. The corporate expenses line in the table below represents certain unallocated expenses, including primarily salaries, wages and benefits, purchased services, rent, utilities and depreciation and amortization associated with corporate functions such as research and development, information systems, finance, legal, human resources and customer service. Corporate expenses also include the annual incentive plan bonus accrual. Other income in fiscal year 2019 included net proceeds upon resolution of legal proceedings. The amount received under a confidential agreement resolving these legal proceedings was material to our financial results for the period. July 31, Assets 2019 2018 (in thousands) Business to Business Products $ 65,282 $ 65,143 Retail and Wholesale Products 94,809 89,623 Unallocated assets 45,136 39,916 Total Assets $ 205,227 $ 194,682 Year Ended July 31, Net Sales Income 2019 2018 2019 2018 (in thousands) Business to Business Products $ 105,877 $ 105,043 $ 31,388 $ 35,120 Retail and Wholesale Products 171,148 160,957 8,683 6,975 Net Sales $ 277,025 $ 266,000 Corporate Expenses (29,659 ) (26,218 ) Income from Operations 10,412 15,877 Total Other Income (Expense), Net 4,136 (1,011 ) Income Before Income Taxes 14,548 14,866 Income Tax Expense (1,933 ) (6,644 ) Net Income $ 12,615 $ 8,222 Net Income (Loss) Attributable to Noncontrolling Interest $ 4 $ (18 ) Net Income Attributable to Oil-Dri $ 12,611 $ 8,240 The following is a summary by fiscal year of financial information by geographic region (in thousands): 2019 2018 Sales to unaffiliated customers by: Domestic operations $ 264,476 $ 254,158 Foreign subsidiaries $ 12,549 $ 11,842 Sales or transfers between geographic areas: Domestic operations $ 5,097 $ 5,570 Income before income taxes: Domestic operations $ 14,280 $ 14,742 Foreign subsidiaries $ 268 $ 124 Net Income (Loss) attributable to Oil-Dri: Domestic operations $ 12,456 $ 8,249 Foreign subsidiaries $ 155 $ (9 ) Identifiable assets: Domestic operations $ 195,032 $ 185,361 Foreign subsidiaries $ 10,195 $ 9,321 Sales to Walmart, our largest customer, are included in our Retail and Wholesale Products Group. The percentage of consolidated net sales and net accounts receivable attributed to Walmart are shown in the table below: 2019 2018 Net sales for the years ended July 31 20% 18% Net accounts receivable as of July 31 26% 26% There are no other customers with sales equal to or greater than 10% of our total sales.