Will a standard rain cover for my backpack work?

No. Rain covers are designed for light rain. In the Amazon, water will seep through the back panel and soak everything from the inside. Use internal dry bags.

How often should I change the silica gel packets?

If you are in high-humidity areas, replace them every 3 days. If they become saturated, they will stop absorbing moisture.

Can I use Ziploc bags?

Only for temporary storage. They lack the durability for jungle travel and will likely tear or puncture after a day of being packed and unpacked.

Keeping Your Gear Dry in the Amazon Rainforest

Use a combination of heavy-duty dry bags for your main pack and individual silicone-sealed dry pouches for electronics. Silica gel packets are essential to prevent mold growth inside your gear once it is sealed.

Use the double-bagging method. Place your clothes and sleeping bag inside heavy-duty 20L dry bags before putting them into your main backpack. Even if your backpack has a rain cover, it will soak through in a tropical downpour.
Protect electronics with individual dry pouches. Do not rely on one large bag for all electronics. Store your phone, camera, and spare batteries in separate, transparent IPX8-rated dry pouches so you can use them without exposing the contents to humidity.
Manage humidity with desiccants. Toss two 10g silica gel packets into every dry bag or sealed container. The Amazon humidity will condense inside even the best bags; these packets are the only way to stop your lenses from fogging and your electronics from corroding.
Seal your internal documents. Keep your passport and transit permits in a vacuum-sealed plastic bag. Carry an extra gallon-sized freezer bag for when you need to access these documents during a rainstorm.

Will a standard rain cover for my backpack work?: No. Rain covers are designed for light rain. In the Amazon, water will seep through the back panel and soak everything from the inside. Use internal dry bags.
How often should I change the silica gel packets?: If you are in high-humidity areas, replace them every 3 days. If they become saturated, they will stop absorbing moisture.
Can I use Ziploc bags?: Only for temporary storage. They lack the durability for jungle travel and will likely tear or puncture after a day of being packed and unpacked.