That gas mower you have owned for years is spewing all kinds of pollutants into the air.

If you're ready to trade it in for a more environmentally-friendly model, Black & Decker is giving some incentive this weekend to do so.

The power tool company on Saturday is giving discounts to people who trade in their old gas mowers for rechargeable mowers.

The models available include:

CM1936 – 19 in. 36V Rechargeable Mulching Mower with Removable Battery 

CM1836 – 18 in. 36V Rechargeable Mulching Mower   

Check here for more about the event, which runs from 12. p.m. to 4 p.m., at the Cardinal Shehan School on Loch Raven Boulevard.