That's a great question! A slipping trash bag is one of those small, daily annoyances that can make a mess and be really frustrating. Luckily, there are some easy, low-cost solutions that work wonders.
First, the classic and most effective method is using bungee cords or sturdy elastic bands. Simply place your bag in the can, pull the liner's edges over the rim, and hook a bungee cord around the entire top. It creates downward tension that holds the bag perfectly in place.
If you don't have bungee cords, look for bulldog clips or strong binder clips. Clip several of them evenly around the rim, pinching the bag liner to the side of the can. This is a fantastic office-supply hack for smaller bins.
For a permanent, built-in solution, consider applying self-adhesive hook-and-loop strips (like Velcro). Stick the rough "hook" side strips vertically on the inside walls of the trash can. The soft "loop" side can be attached to the outside of your trash bags. They'll grip each other and prevent any sliding.
Finally, the simplest trick of all: use a double-bagging technique. Put your first bag in, then add a second bag, but rotate it so its handles or ties are opposite the first bag's. Tie the handles from the inner bag to the handles of the outer bag over the rim. This creates a counter-pull that locks both bags securely.
The key is creating friction or a mechanical hold. With one of these tricks, your bag will stay put, making trash day much smoother