How long before you close facebook ad?

How long do you guys wait before skiping particular ad/product and go try another? Is it 1hour/ 1 day/ 1 week before sales or whatever you expect usually starts rolling?

I have some products that I need to sell, but most of them gets likes, hearts and comments instead sales.

Should I try different aproach here or just try other products?

My ads are simple enough: product photo and simple description with link to the product.

Thanks for replying.

hi, If you've found what are your best seller yet, focus only on those, but if you haven't go for one week on each product to find the good one.

about adds, give to it something catchy like "limited quantity" "was XXX USD now XX USD" ...

Usually you want to calculate your profit per item, and then spend accordingly.
If you'r not making any sales from that, then change your ad and try again.
The only thing I have learnt from facebook ads is it takes fecking ages to get the right ad working.