Because they have no preservative they can be used more often, even every half-hour, without damaging your eyes. They are moderately expensive. You can buy them, but if you need them regularly they can be obtained on prescription. If the cleaning is not helpful, in addition your eyes may feel more comfortable if you use antibiotic ointment. Your GP will need to prescribe it.
Some people benefit using the cream intermittently.
This treatment is sometimes useful if the other treatments do not work. It is particularly effective if you have a skin condition, such as acne rosacea, or very dry skin, or if the edge of your eyelid stays red with many scales. Antibiotic tablets are NOT suitable for everyone, particularly if you use several other tablets or have stomach problems. You will need to discuss this treatment with your GP first. Oxytetracycline 250mg twice daily is usually used for 3 months , but not if pregnant.