If you are looking to put up a bird feeder or a mailbox post, or install or fix a fence post, this is an easy DIY product available online and most local hardware stores. It's called Sika Post Fix ( and Sika Canada Inc. and Sika). You mix it in the bag itself and pour it in. It expands to create an intimate bond with your post. Make sure you wear safety glasses and gloves for this one. | Sherry Holmes

This incredible expanding and rigid foam sets in 3 minutes, allowing faster fixing of posts (fences, mailbox, birdfeeder etc). One bag of this Sika Post Fix replaces 2 bags of cement. Its fast-setting and high-strength backfill for wooden, PVC and steel in-ground supports. Comes in an easy-to-mix bag. You can find this on Amazon, Rona or Home Depot, or any other major retailers. Here is the full video if you are interested in checking this out: https://www.facebook.com/watch/?v=431195414350502 |

This self-expanding foam lets you set up fence posts in no time | Interesting Engineering