Like pets, cars must occasionally be cleaned, lest they start to smell, get sick, or deter potential mates while you walk them through the park. Shine up your fiberglass friend with today's Groupon to Whistle Clean Car Wash & Auto Detailing in Old Town Fort Collins. Choose from the following options:

• For $39, you get any two express auto-detailing services (up to an $89.98 value). This option is valid for regular-size cars and SUVs, but not oversize vehicles.
• For $99, you get a complete auto detail (a $199.99 value). This option is valid for regular-size cars. SUVs, vans, and oversize vehicles can apply the value of the Groupon toward the total cost but will be required to pay additional fees.
• For $9, you get a full-service Whistle Clean Supreme wash (an $18.99 value). This option is valid for regular-size cars, SUVs, and vans.

Whistle Clean Car Wash maintains sparkling auto interiors and exteriors with a fusion of eco-friendly services and customer-coddling care. Buff mobile machines until they're as radiant as a burning snowman with your choice of two of four express detail services. Automotive aestheticians will focus on the reflectivity of your car's exoskeleton with an express waxing that can last for three months, clean chocolate-bunny globs from Easters past off seats or doorjambs with an express seat or express vinyl treatment, or revive worn carpets with a shampoo-vacuum duo express carpet service. Habitual off-roaders or drivers who attempt to fit as many pizzas into their car as possible will benefit from the complete detail option. This roof-to-wheel interior-and-exterior scrubbing by Whistle Clean Car Wash's expert staff includes a carpet conditioning, a polish wax, window defogging, a wipe down of all your vinyl's incriminating fingerprints, and a 30-day unlimited basic exterior wash pass to keep your ride in mint gum-free condition. For a one-time celebration of cleanliness, opt for a full-service Whistle Clean Supreme wash to rid exteriors of excessive soil, interiors of burrito wrappers, and rims of their goblin-attracting murk.

While taking pains to purify vehicular planes, Whistle Clean Car Wash takes time to look out for Mother Earth. All the soaps used are biodegradable, and the waste water is funneled into the sanitary sewer for treatment. Each wash uses only 35 gallons of water, compared to the 150 gallons used during the average squirt-gun fight.