Check for bugs, spiders and other critters
Insects love to build their little homes inside grills. They'll get behind the controls, inside the burner and even inside the gas valve. These little critters can wreak havoc on your grill and it's up to you to evict them.
From time to time, especially if you're in a rural area, you'll need to check your grill for cobwebs, spiders, wasps and other critters that may choose to live in your grill. A tiny spider or ant in the wrong place can prevent your grill from heating properly. Mud daubers love to build their nests inside the burner. They don't last too long there but their nest will stick around for quite a while. Once, I went to a ladie's home who said her grill wasn't heating right. When I looked inside the grill, a possum had built its nest there. On another occasion, a bird flew out when I opened the grill.
Places to look are inside the control knobs and inside the burner. You may have to unscrew the gas valve and see if something is blocking the orifice. Lift the drip pan out of the grill once in a while and check for anything that has taken up residence.
The biggest thing you can do to keep insects from getting in your grill is to USE IT! A grill that sits around without being used is prime real estate for these guys. Performing these simple maintenance tasks will help keep your Holland Grill in good grilling shape.