MARC 70-G GRANULAR COPPER SULFATE
A granular algaecide and root killer. Effective against many types of algae in lakes, ponds and reservoirs.  Also controls roots in sewer and storm drains. EPA Registered. 

MARC 70-L"SUPER BLUE"
Large crystal copper sulfate. Dissolves slowly.  Works as an algaecide and sewer/drain root killer.  EPA Registered. 

MARC 86 SWIMMING POOL ALGAECIDE
Concentrated.  Keeps pool water clear and free of visible algae.   Controls algae slimes.  EPA Registered. 

MARC 188 A/C LOK-TABS
These gel-tablets treat condensate drain pans.   They lock into place when put in the water so they do not block the drain, and the gel slowly and continuously releases chemicals for months of cleaning action.  They also stop foul and musty odors.  Contains no chlorine or noxious chemicals.

MARC 220 COOLING TOWER MICROBICIDE
A non-foaming blend of two compounds used to control algae and bacteria in recirculating cooling towers. Compatible with other commonly used cooling tower treatments. EPA registered.