ADVASEP-7, a sulfonated β-cyclodextrin, binds dyes and allows them to be more efficiently washed away. SCAS is a quencher that reduces dye fluorescence without the need for washing. Sulforhodamine 101 quenches SynaptoGreen™ background by fluorescent resonance energy transfer (FRET). We also offer Nerve Terminal Staining Kits that pair dyes with background reducers.