The invention relates to control of biofilm development. Specifically, some embodiments of the present invention relate to control of bacterial biofilm formation through addition or breakdown of signal(s) that induce biofilm formation. More specifically, some embodiments of the present invention relate to control (e.g., promotion, prevention) of biofilm development by application or hydrolysis of adenosine triphospate (ATP), deoxyadenosine triphosphate (dATP), or derivatives or analogs thereof (e.g., through application or administration of an agent that hydrolyzes ATP, dATP, or derivatives or analogs thereof (e.g., apyrase)).