How to choose: Which or That

When should you use 'that' or 'which' in a sentence?  I find it difficult figuring out if I used it appropriately.  According to Shundalyn Allen, Grammarly blog writer it's simple, see below for details.

• In a defining clause, use that.
• In non-defining clauses, use which.
• Remember, which is as disposable as a sandwich bag. If you can remove the clause without destroying the meaning of the sentence, the clause is nonessential, and you can use which.
• After reading the blog, it's now easier for me to remember when to use either of them.  I should use 'which' if the information is a non-defining clause.  This means if you took 'which' away, it wouldn't affect the meaning of the sentence.  See the two examples from the blog below to get a better understanding:
• My bike that has a broken seat is in the garage.   'That' is essential to the meaning of the sentence, without it, you wouldn't know if this person meant this particular bike or another bike.

My bike, which has a broken seat, is in the garage. 'Which'  is non-essential to the meaning of the sentence. Without 'which' you would still know that the bike with the broken seat is in the garage. 

Check out the Grammarly blog for more details at the following link:  Grammarly Blog on Which vs. That