Challenger is a biodegradable alternative to hazardous solvent-based cleaners that can stand up to any residential or commercial cleaning task. Challenger is available in convenient spray bottles, as well as cost-effective concentrated containers that can be diluted to the appropriate strength. Water-based, yet more effective than many solvent-based cleaners, Challenger will not harm plants or foliage. Challenger can help you tackle most cleaning applications: Interior surfaces like walls, windows, or carpets; Exterior surfaces like outdoor furniture, garbage cans, or aluminum siding; Industrial applications like trucks, heavy equipment, or restaurant filters. Whatever your cleaning application, Challenger can get the job done.