Bissell is running a $20 off voucher at the top of this page for orders over $100, and that voucher is best for you when your cart reaches the $100 minimum and you want a straightforward fixed saving across cleaning, pet and tech categories. The page also lists a 15% off code for steam and sanitizing products (plus free shipping over $75) and several product specific markdowns, so the cheapest option depends on what you are buying and how much you spend.
High spend on steam or sanitizing machines: If your cart is mostly qualifying steam or sanitizing products, use the 15% off code. For example, on a $200 steam order you save 15% which is $30, leaving a final price of $170. The $20 off voucher would reduce the same $200 cart to $180, so the 15% code is the better choice for steam items.
Orders of $100 or more across any category: If your order totals at least $100 and is not concentrated in steam items, the $20 off voucher at the top of this page is an easy pick. On a $120 mixed order the $20 voucher takes $20 off, leaving $100. That beats lower sale amounts such as a single $10 off product.
Orders between $75 and $99: If your cart is $75 to $99 and contains steam or sanitizing items, the 15% code also gives free shipping on orders over $75, so it can be useful here. For a $90 steam purchase the 15% discount takes $13.50 off, leaving $76.50 and you also get free shipping if your order meets the $75 threshold after any conditions the retailer applies.
Buying a marked down machine or bundle: Many machines have direct reductions shown on their product pages, for example $90 off the FlexClean robot, $45 off the PowerSteamer mop, $40 off Little Green Max, and several other fixed price reductions or percent off sales. Those product reductions are applied automatically at checkout and may be larger than the site codes for that specific item. If the product you want is one of these, the product reduction usually beats a generic code for that item.
Low spend under $75 or first order: If your cart is under $75 and you are a new customer, signing up for the newsletter gives 10% off your first order; that can be the best route for small buys if the item is eligible. For very small purchases, a 10% first order saving may exceed a fixed $20 off which requires $100 minimum.
Choose the single offer that results in the lowest total at checkout. Use the $20 off voucher on mixed carts of $100 or more, pick the 15% steam code for steam or sanitizing product orders where 15% saves more, and rely on product page reductions when an item already carries a larger fixed or percent discount. If a product offer states it cannot be used with other offers, use the product price shown because those terms take precedence.