You want frogs in your garden; you really really do.
They eat insects (including mosquitos) and also slimy invertebrates (yes, slugs) and they are also unbelievably cute.
The single most important feature you need is water – a pond is obviously best, but failing that, a large container filled with water and more importantly, a way in and out of it. For a container or pool, this will mean bricks fashioned in some sort of ‘step’ arrangement; for a pond, the marginal (shallower) area on the sides will do the trick.
They need pond plants to hide in-amongst, and to attract insects. Frogs actually spend most of their time on land, so adequate foliage, providing moist, shady coverage near to your pond or pool is vital.
Patience and consideration
Wait for the frogs to find you, rather than raiding another pond for frogspawn, and be careful with any chemicals you are still using and consider cutting them out – for the benefit of all nature, but particularly for frogs who drink and breathe through their skin. Avoid topping pools up with tap water, because the chlorine in it can harm frogspawn – it’s best to use a water butt, and if you must use tap water, then leave it out for a day or two to evaporate the chlorine. If you live in an area where your tap water is chloraminated, then always use rainwater.
Slowly does it!
Most importantly though (and sorry to make you wince), keep your lawn short, and check it thoroughly before you mow it.