Delete record with condition in custom module in magento

I have create a Model and for some development i had to implement delete method. It is very easy. I also try for conditional delete. But i am using the following code which will fulfill your requirement for conditional delete.

foreach($pid as $spid){

         $items = Mage::getModel('custom/csaabandonedcart')->getCollection()

        ->addFieldToFilter('csa_id', Mage::getSingleton('customer/session')->getCustomerId())

        ->addFieldToFilter('customer_id', $retailer)->addFieldToFilter('product_id', $spid);

         

 foreach($items as $item){

        $item->delete();

    }

                                               

 }