That's an excellent question, and you're not alone in asking it! Dealing with outdoor trash can odors is a common challenge, especially in warmer weather. The good news is, yes, there are definitely products made specifically to tackle this smelly problem.
While not every liner is created equal, several types are designed with odor control in mind. Many standard "heavy-duty" or "contractor" bags help contain smells better than thin bags by being less prone to tears and leaks. However, the real heroes are the bags with added technology. You can find liners infused with baking soda or other neutralizers that actively absorb odors as they form. Some are even scented (like citrus or lavender) to mask unpleasant smells, though this is a matter of personal preference.
For a more targeted solution, look for bags marketed as "odor-absorbing," "odor-blocking," or "fresh scent." Some premium options feature a built-in charcoal filter, which is highly effective at trapping odor molecules before they escape the can. Another great tip is to use a dedicated deodorizing disk or pouch inside the can itself, underneath the liner. These often contain activated charcoal or gel absorbers and work continuously.
Beyond the bag, your habits make a big difference. Always tie bags securely, clean your outdoor can regularly with a vinegar or disinfectant solution, and try to avoid putting extremely pungent waste directly into the main bin without its own sealed bag. Combining a good quality, odor-fighting liner with these practices is your best strategy for a fresher outdoor space.