Biofilms are complex communities of microorganisms enclosed in an exopolysaccharide matrix, which makes them resistant to antimicrobial agents. This resistance is not due to increased microbial resistance but rather to the ability of biofilms to protect cells from antimicrobial agents. Biofilm resistance is often attributed to factors such as restricted antimicrobial penetration, decreased growth rates, and the expression of resistance genes. However, the exact mechanisms of biofilm resistance remain unclear. One key factor is the presence of persister cells, which are a small fraction of the population that can survive antibiotic treatment. These cells are not inherently resistant but can survive due to their ability to enter a dormant state. The presence of persisters explains the high resistance of biofilms to killing by a wide range of antimicrobials. Understanding the role of persisters is crucial for developing effective strategies to eradicate biofilms. Current research focuses on identifying genes involved in persistence and tolerance, as well as developing new therapies that target these mechanisms. Additionally, physical methods such as electromagnetic fields and ultrasound are being explored for biofilm eradication. The development of new antibiotics and combination therapies that target both biofilm formation and persistence is a promising approach. Overall, the challenge of biofilm resistance highlights the need for a deeper understanding of the complex interactions between microorganisms and their environment.Biofilms are complex communities of microorganisms enclosed in an exopolysaccharide matrix, which makes them resistant to antimicrobial agents. This resistance is not due to increased microbial resistance but rather to the ability of biofilms to protect cells from antimicrobial agents. Biofilm resistance is often attributed to factors such as restricted antimicrobial penetration, decreased growth rates, and the expression of resistance genes. However, the exact mechanisms of biofilm resistance remain unclear. One key factor is the presence of persister cells, which are a small fraction of the population that can survive antibiotic treatment. These cells are not inherently resistant but can survive due to their ability to enter a dormant state. The presence of persisters explains the high resistance of biofilms to killing by a wide range of antimicrobials. Understanding the role of persisters is crucial for developing effective strategies to eradicate biofilms. Current research focuses on identifying genes involved in persistence and tolerance, as well as developing new therapies that target these mechanisms. Additionally, physical methods such as electromagnetic fields and ultrasound are being explored for biofilm eradication. The development of new antibiotics and combination therapies that target both biofilm formation and persistence is a promising approach. Overall, the challenge of biofilm resistance highlights the need for a deeper understanding of the complex interactions between microorganisms and their environment.