What's the best sand infill for artificial grass?

First of all, using infills is highly recommended for all installation. Infills serve the following two purposes:

Providing extra weight on artificial grass surface to minimize the expansions and contractions caused by temperature change. By using infills, the seams and edges of your I turf installation will be less likely separated by the expansions and contractions, and also prevent wrinkles.
Helping the turf fibers to stand up better. All of our artificial grass products are with engineered fibers which stands up really well, but infills will just enhance it. It is not easy to tell which infill is better as different infills have their own values, here is a summary:
Regular silica sand will be the most inexpensive type of infill which serve the above two main purpose.
Green colored infills are bit more expensive, but it has a green color to make your overall installation more unified and professional look.
TCool infill will keep the artificial grass cooler during hot days.
Zeolite infill will help to minimize the dog/pet urine smells
WonderFill infill not only is green colored but also coated with antimicrobial agent to prevent germ and bacteria from growing.

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