Can I use this several times before needed to dry it out? Is there a way of knowing when it needs drying? Thanks.

Yes you could use more than once, but it would depend on the size of the flowers. There is not way of knowing unless you purchase a product with an indicator included (typically orange silica that goes green. I would suggest perhaps a light dryinging afer each use to be sure it is at it's most effective.

Do you need to use this in a microwave or oven?

No you do not use it in a microwave or oven - simply seal in a container along with your flowers and leave for a period of time say 5-8 days (depends on the flowers / quantity). As the flowers dry the silica gel will aborb the moisture. What you can do is recharge the gel by putting in a oven on a low heat (say 100c for an hour or 2) or by putting in a microware on defrost for about 15-20 minutes but this is not the recommended method as it tends to break down the grains

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Trustleaf 1kg Bag Granular Silica Gel 0.5-1mm Grains, Flower Drying (1kg Bag - ws)

Product ID: 287018815

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🌸0.5-1mm granules protect delicate flowers

💧Absorbs 30% of its weight

♻️Reusable with simple oven/microwave reactivation

Description

💼 Stay dry, stay sharp — moisture control that works as hard as you do!

COMPACT CONVENIENT - 1kg bag sized for professional and home use, fitting seamlessly into your workflow.
DELICATE FLOWER FRIENDLY - Fine 0.5-1mm granules ensure gentle drying without damaging petals.
ECO FRIENDLY REUSABILITY - Easily reactivates with heat, saving you money and reducing waste.
MULTI PURPOSE POWERHOUSE - Perfect for flower drying, dehumidifiers, and secure packaging.
ULTIMATE MOISTURE CONTROL - Absorbs moisture up to 30% of its own weight, keeping your valuables dry and pristine.

Trustleaf’s 1kg Granular Silica Gel features 0.5-1mm grains designed for delicate flower drying and versatile moisture absorption. With a high capacity to absorb up to 30% of its weight and easy reactivation via oven or microwave, it’s the sustainable, professional choice for keeping your environment dry and your items protected.

Specifications

Brand	Trustleaf
Product Dimensions	16 x 25 x 5 cm; 1 kg
Material	Silica Gel
Item Weight	1 kg

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