I have been doing this with every bottle of laundry detergent, when it occurred me to, this savings tip could be useful! When doing laundry and getting towards the end of the bottle, even if it feels empty, do not toss it just yet.
Simply, leave your detergent standing upside down until you are ready to start your next load of laundry. Every time I do this, I have a FREE load of detergent waiting for me. While others would just toss as soon as it feels empty, I know better, there is usually one more load waiting – this is how I get a FREE wash out of every bottle!