Most piperazines seized at raves have been in tablet form, containing both BZP and TFMPP, ranging in color from pink to yellow or tan, and marked with different symbols including a spider, fly, “A,” or a simple straight line. While there is no way of knowing the dose of BZP and/or TFMPP in these tablets, most users prefer doses ranging 35-150 mg. Some users have reported snorting or smoking BZP preparations.