Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE ref_product_categories (product_category_description VARCHAR, product_category_code VARCHAR)
TABLE: CREATE TABLE products (product_category_code VARCHAR, product_description VARCHAR)

### Question ###
Find the category descriptions of the products whose descriptions include letter 't'.

### Accurate SQL ###

SELECT T1.product_category_description FROM ref_product_categories AS T1 JOIN products AS T2 ON T1.product_category_code = T2.product_category_code WHERE T2.product_description LIKE '%t%'