International Boatguard 100 is an effective low-cost antifouling, formulated to repel all kinds of fouling organism. It is quick and easy to apply, and provides comprehensive protection for a whole season. Good to Know: Recommended for fresh water but also very effective in brackish and salt water. Polishing ensures consistent performance while in motion Quick and easy to use, for convenient application Can be applied up to 6 months in advance Provides protection for up to one year.