Sashco15010 Mor-Flexx Caulking for Mortar, 10.5 Ounce Cartridge, Beige (Pack of 12)

Q: Is it sand color or gray? also can you use it outside for brick morter repair??

It is light sand colored. It works well outdoors and remains flexible. It stays the same color when wet and other grout may get darker, and you may notice the difference. Excellent product.

Q: Is it good for step cracks

Mor-Flexx will work well in the 90° joint between steps. However, we do not recommend it for walking surfaces. If you have cracks in the walking surface, we would direct you to another product we manufacture called Slab. https://www.amazon.com/Sashco-16210-Concrete-Sealant-Cartridge/dp/B01GA7OEQM/ref=sr_1_2?ie=UTF8&qid=1526654663&sr=8-2&keywords=slab+concrete+repair For more information, please contact our customer service and technical support team at 1-800-767-5656 or at csteam@sashco.com.

Q: Does it contain sand? If so, it can be used to stop mice from chewing on it.

Mor-Flexx does contain sand, but we can't say for sure that it will stop mice from chewing it. If you use it, we would love to hear your impressions, though. You can reach out to us at csteam@sashco.com or call us at 1-800-767-5656.