The first reason you need to clean your bbq grill regularly is to keep it free from harmful germs and bacteria that can cause illnesses. These germs are often attracted to your barbecue and get stuck on the heating elements of the grill. When this happens, they can slowly seep up into the food that you are cooking and can even grow to dangerous levels. The harmful bacteria can also make their way into your food as the BBQ grill gets hot and this can also lead to an infection that may require surgery to remove.
Another reason why you need to clean your bbq grill regularly is so that you can avoid it from getting too dusty. Dust is also a possible carrier of bacteria and germs that can get onto your food and start poisoning you. The best thing you can do is make sure you buy some sort of grill cover to place over it when you are not using it. You can also purchase a grill vacuum cleaner for home use that will be able to pick up any leftover food that may fall off of the grill. This is also the best way to ensure that the grill stays clean and free from bacteria that can get into it when you are not using it.
The final reason why you need to clean your bbq grill regularly is so that you can prolong the life of the product. Since it is very possible to cut through metal, plastic or other material, it would be a good idea if you cleaned the grill before you ever used it to reduce all the potential damage. Cleaning it regularly will help keep it free of built-up food and grease which can eventually lead to it rusting out or breaking down altogether. It is also important to note that grills are very difficult to clean if they have been exposed to water for a long period of time.