Silica gel has a peculiar smell after being scalded by boiling hot water, so it is not suitable for use. reusable silicone straws，Real silicone is actually a colorless, odorless, non-toxic and tasteless raw material, even if there is food or liquid in it, it will not smell like plastic type or rubber containers. Silica gel is chemically stable and can withstand high temperatures. Generally, the heat that silicone can withstand is between 40-200 grades.

Silica gel, also known as silicic acid solution gel, is a highly active adsorbent and an amorphous product. The main component of silica gel is silica, which happens to be chemically stable and non-flammable. Silica gel can be divided into two categories: organic silica gel, natural silica gel and inorganic silica gel according to its properties and components.

Inorganic silica gel is a highly active adsorption fabric. It is an amorphous substance, insoluble in water and solvents, non-hazardous, odorless, chemically stable, and does not interact with any substances except strong alkali and hydrofluoric acid solution.

Silicone is definitely an organosilicon substance, which describes a composition consisting of Si-C linkages and at least one organic group directly attached to the silicon atom. Atomically linked compounds will also be considered silicone components

like：

How to wash the silicone cover yellow   

What are the advantages of silicone straws

How to remove the smell of silicone straws